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Brilliance CT TM

40-Channel Configuration Calibration Manual

4550 193 04061 Revision A

This document and the information contained in it is proprietary and confidential information of Philips Medical Systems (“Philips”) and may not be reproduced, copied in whole or in part, adapted, modified, disclosed to others, or disseminated without the prior written permission of the Philips Legal Department. Use of this document and the information contained in it is strictly reserved for current Philips personnel and Philips customers who have a current and valid license from Philips for use by the customer’s designated in-house service employee on equipment located at the customer’s designated site. Use of this document by unauthorized persons is strictly prohibited. Report violation of these requirements to the Philips Legal Department at 22100 Bothell Everett Highway, Bothell, WA 98021. This document must be returned to Philips when the user is no longer licensed and in any event upon Philips’ first written request.

Philips Medical Systems © 2004


Philips Medical Systems  2004 KONINKLIJKE PHILIPS ELECTRONICS N. V. ALL RIGHTS RESERVED.

Warranty Disclaimer PHILIPS PROVIDES THIS DOCUMENT WITHOUT WARRANTY OF ANY KIND, EITHER IMPLIED OR EXPRESSED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.

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Symbol Descriptions

Attention symbol

Radiation warning symbol

Laser warning symbol

Biohazard warning symbol

Magnetism warning symbol

Projectile warning symbol

Electrical warning symbol

Do not touch


Revision History ECO # R61040022

Revision A

Date

Comments

September 2004

New Release

This document was prepared by the CT PMG Haifa Service Innovation Department. For any additions, corrections, or suggestions, contact: CT PMG Haifa Customer Support Department Email: _1HFA_Support_e2@philips.com


Safety Information To the User of This Manual The user of this manual is directed to read and carefully review the instructions, warnings and cautions contained herein prior to beginning installation or service activities. While you may have previously installed or serviced equipment similar to that described in this manual, changes in design, manufacture or procedure may have occurred which significantly affect the present installation or service.

Installation and Environment Except for installations requiring certification by the manufacturer per federal standards, see that a radiation protection survey is made by a qualified expert in accordance with NCRP 102, section 7, as revised or replaced in the future. Perform a survey after every change in equipment, workload, or operating conditions which might significantly increase the probability of persons receiving more than the maximum permissible dose equivalent.

Diagnostic Imaging Systems - Mechanical-electrical Warning All of the moveable assemblies and parts of this equipment should be operated with care and routinely inspected in accordance with the manufacturer’s recommendations contained in the equipment manuals. Only properly trained and qualified personnel should be permitted access to any internal parts. Live electrical terminals are deadly; be sure line disconnects are opened and other appropriate precautions are taken before opening access doors, removing enclosure panels, or attaching accessories. Do not under any circumstances, remove the flexible high tension cables from the x-ray tube housing or high tension generator and/or the access covers from the generator until the main and auxiliary power supplies have been disconnected. Failure to comply with the above may result in serious or fatal bodily injuries to the operator or those in the area.

Electrical-grounding Instructions The equipment must be grounded to an earth ground by a separate conductor. The neutral side of the line is not to be considered the earth ground. On equipment provided with a line cord, the equipment must be connected to properly grounded, three-pin receptacle. Do not use a three-to-two pin adapter.

Diagnostic Imaging Systems - Radiation Warning X-ray and Gamma-rays are dangerous to both operator and others in the vicinity unless established safe exposure procedures are strictly observed. The useful and scattered beams can produce serious or fatal bodily injuries to any persons in the surrounding area if used by an unskilled operator. Adequate precautions must always be taken to avoid exposure to the useful beam, as well as to leakage radiation from within the source housing or to scattered radiation resulting from the passage of radiation through matter. Those authorized to operate, participate in or supervise the operation of the equipment must be thoroughly familiar and comply completely with the current established safe exposure factors and procedures described in publications, such as: Subchapter J of Title 21 of the Code of Federal Regulations, "Diagnostic X-ray Systems and Their Major Components", and the national council on radiation protection (NCRP) no. 102, "Medical X-ray And Gamma-ray Protection For Energies Up To 10 Mevequipment Design and Use", as revised or replaced in the future. Those responsible for planning of x-ray and gamma-ray equipment installations must be thoroughly familiar and comply completely with NCRP no. 49, "Structural Shielding Design and Evaluation For Medical Of X-rays and Gamma-rays of Energies Up to 10 Mev", as revised and replaced in the future. Failure to observe these warnings may cause serious or fatal bodily injuries to the operator or those in the area. Add additional safety information as needed


Contents BrillianceTM CT 40-channel Configuration Calibration Manual .........................................................

1

Calibration Criteria Matrix......................................................................................................................................... Calibration Testing Procedure.................................................................................................................................. Load Grid Voltages................................................................................................................................................... Filament Calibration ................................................................................................................................................. Reference Detector and Converter Tests................................................................................................................. Noise and Bias.................................................................................................................................................... Signal Test .......................................................................................................................................................... Marker Alignment Test ............................................................................................................................................. Slice Markers Alignment ..................................................................................................................................... Symmetry Markers Alignment............................................................................................................................. X-ray Tube Z-Direction Calibration........................................................................................................................... A-Plane Collimator Z-Direction Calibration............................................................................................................... Bad Detectors Check ............................................................................................................................................... X-ray Tube X-Direction Mechanical Alignment......................................................................................................... UH Collimator X-Direction Mechanical Alignment .................................................................................................... UH Collimator Z-direction Mechanical Alignment ..................................................................................................... Step 1.................................................................................................................................................................. Step 2.................................................................................................................................................................. XRT DFS Position First Calibration .......................................................................................................................... In Case of a Problem .......................................................................................................................................... XRT Focal Spot Width Calibration............................................................................................................................ XRT DFS Position Final Step ................................................................................................................................... Warm Up Procedure Before Phantom and Air Calibration ....................................................................................... Phantom Calibrations ............................................................................................................................................... Air Calibration........................................................................................................................................................... HCOR Calibration..................................................................................................................................................... System Calibrations Backup ....................................................................................................................................

2 3 3 5 6 6 9 10 10 12 13 14 17 19 21 23 23 26 29 31 34 38 38 39 41 42 44

Appendix A: The Calibration Testing Graphic User Interface ...........................................................

45

Launching the Image Calibration Selector ............................................................................................................... Image Calibration Selector Functions .................................................................................................................

45 49

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Contents Appendix B: X-ray Tube Mechanical Alignment Procedures .............................................................

56

X-ray Tube Z-direction Mechanical Alignment Procedure........................................................................................ X-ray Tube X-direction Mechanical Alignment Procedure........................................................................................

56 59

Appendix C: UHR Collimator Mechanical Alignment Procedure .......................................................

65

UH Collimator Z-Direction Mechanical Alignment Procedure................................................................................... UHR Collimator X-Direction Mechanical Alignment Procedure ................................................................................

65 67

Appendix D: Inserting and Removing the Tungsten Slit ...................................................................

68

Appendix E: Loading A-Plane Calibration Constants ........................................................................

70

Appendix F: Adding Shims ................................................................................................................

73

Appendix G: Rotor Balance ...............................................................................................................

75

Appendix H: Patient Support Calibrations ........................................................................................

76

Patient Support Horizontal Calibration ..................................................................................................................... Patient Support Vertical Calibration ......................................................................................................................... Couch Vertical Position display........................................................................................................................... Estop status ........................................................................................................................................................ Calibration........................................................................................................................................................... Abort ...................................................................................................................................................................

76 79 80 80 80 80

Appendix I: Main Drives and Angulation Setup for Original MDP & TDP Systems, and Setup for GMP Equip Systems ................................................................

81

Purpose .................................................................................................................................................................... Scope ....................................................................................................................................................................... Safety Precautions ................................................................................................................................................... (MDP & TDP Systems) Equipment Required........................................................................................................... (GMP Equip Systems) Equipment Required ............................................................................................................ Angulation Procedure...............................................................................................................................................

81 81 81 81 82 82

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Contents Main Drive Commissioning Procedure ..................................................................................................................... Appendix ..................................................................................................................................................................

83 88

Appendix J: Tilt Calibration ..............................................................................................................

89

Tilt Position and Pot1/Pot2 Display..................................................................................................................... Estop Status........................................................................................................................................................ Calibration........................................................................................................................................................... Abort ................................................................................................................................................................... Placing the Protractor ......................................................................................................................................... Pot1/Pot2 Adjustment .........................................................................................................................................

89 89 90 90 90 91

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BrillianceTM CT 40-channel Configuration Calibration Manual

BrillianceTM CT 40-channel Configuration Calibration Manual This manual provides calibration procedures and methods for the Brilliance CT 40-channel Configuration scanner: •

Physical Calibrations: Procedures that must be performed during system installation, planned maintenance, image quality troubleshooting and certain subassembly replacement procedures.

Couch Calibrations: Horizontal and vertical calibrations performed during troubleshooting and certain subassembly replacement procedures.

Gantry Subsystem Calibrations Tilt and Main Drives calibrations performed during troubleshooting and certain subassembly replacement procedures.

WARNING

MAKE SURE TO FOLLOW ALL THE SAFETY GUIDELINES AS DESCRIBED IN THE BRILLIANCE CT 40-CHANNEL CONFIGURATION SAFETY MANUAL.

WARNING

COLLISION HAZARD! WHEN MOUNTING THE PHANTOM MAKE SURE THAT IT IS POSITIONED SO THAT IT WILL NOT COME IN CONTACT WITH THE GANTRY COVERS OR THE ROTOR.

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BrillianceTM CT 40-channel Configuration Calibration Manual

Calibration Criteria Matrix

Calibration Criteria Matrix Table 1 determines the Calibrations required when performing the listed procedures. Follow the instructions in this manual for the calibrations indicated in the table. For the Performance Checks, follow the instructions in the Brilliance 40-channel Configuration Performance manual.

Calibrations Backup

HCOR Calibration

Air Calibration

Reference Detector and Converter Tests

Phantom Calibrations

Bad Detectors Check

XRT DFS Position Final Step

XRT Focal Spot Width Calibration

XRT DFS Position First Calibration

UH Collimator X and Z-Directions Mechanical

X-ray Tube X-Direction Calibration

X-ray Tube Z-Direction Final Verification

A-Plane Collimator Z-Direction Mechanical

X-ray Tube Z-Direction Mechanical Alignment

Filament Calibration

Load Grid Voltages

Load A-Plane Constants

Procedure

Rotor Balance

Table 1:

On-site System Installation Planned Maintenance X-ray Tube A-Plane Collimator (with Reference Converter) Anode Power Module or Cathode Power Module UHR Collimator Single APDM (Detector Module) Six Center APDMs (Detector Modules) or DMS Philips Medical Systems Confidential and Proprietary Information

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BrillianceTM CT 40-channel Configuration Calibration Manual

Calibration Testing Procedure

Calibration Testing Procedure Load Grid Voltages 1 Write down the grid voltage values listed on the X-ray tube. In case that there are no values listed on the tube for 80kV, use the 90kV values to fill into the 80kV place. 2 Click Home | Utilities| Calibration | Selective Calibration and select Load Grid Voltage Defaults. 3 Click Start Calibrations. The Load/Enter Default Grid Voltage Option window opens (see Figure 1).

Figure 1:

4 Click Edit. The Grid Voltage Entry dialog opens. 5 Fill in the following fields (field background turns to orange when data is inserted): a XRT Number (X-ray tube s/n shown on the X-ray tube label) b XRT Install Date NOTE

Enter the date in the prescribed format as show in Figure 2 (day-month-year)

Figure 2:

c Insert the grid voltages shown on the X-ray tube label (see example in Figure 3). Philips Medical Systems Confidential and Proprietary Information

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BrillianceTM CT 40-channel Configuration Calibration Manual

Load Grid Voltages

Figure 3: X-ray Tube Grid Values

6 Verify all data and then click Save (Save button becomes active when all fields are filled in). Verify to update the grid voltages. 7 Click Exit to close the Grid Voltage Entry dialog. Date ______________

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BrillianceTM CT 40-channel Configuration Calibration Manual

Filament Calibration

Filament Calibration To calibrate and optimize the tube filament current perform Filament Calibration as follows: Perform calibration tests manually as follows: 1 Click Home | Utilities | Calibrations | Selective Calibration and select Filament (see Figure 4).

Figure 4:

2 Click Results to open the Results window. 3 Click Start Calibrations. 4 Wait until the message Calibration finished successfully! appears in the results window. 5 Click Exit to close the Image Calibration Selector.

â?’

Date ______________

Check

if Calibration is OK.

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BrillianceTM CT 40-channel Configuration Calibration Manual

Reference Detector and Converter Tests

Reference Detector and Converter Tests Noise and Bias 1 Click Home | Utilities | Diagnostic | Service Parameters. 2 Click the Scan Parameters tab. Set Scan with X-ray to NO and Diagnostic level to 1. 3 Perform a Head Axial scan with the following parameters: — Collimation 16x2.5 mm — Rotation time 1.0 sec 4 Click Home | Diagnostic | Analysis 40 slices. Click Archive in the Analysis dialog. 5 In the Archive Manager click the Irs icon once to close the IRS archive. 6 Click the Irs icon again to open the IRS archive. NOTE

Refresh takes a few minutes.

7 In the Image List, select the appropriate Raw and click OK. 8 Click Raw / Bias in the Analysis dialog. The Raw/Bias display opens (see Figure 5). 9 Click Ref. Det. In the Reference Detector summary window (see Figure 6): — For Bias, check the Average in the Value column. — For Noise, check the Std Dev.in the Value column.

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BrillianceTM CT 40-channel Configuration Calibration Manual

Reference Detector and Converter Tests

Click Ref. Det.

Check here for Bias and Signal test results

Figure 5:

Check here for Noise test results Figure 6:

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BrillianceTM CT 40-channel Configuration Calibration Manual

Reference Detector and Converter Tests

If the Bias and the Noise are within the limits specified in Table 2, proceed to section Signal Test. If the Bias and the Noise are not within the limits specified in Table 2, replace the reference detector and converter and repeat the test. Table 2: Limits for Bias and Noise Tests

Date ______________

Test

Lower limit

Upper limit

Bias

9500

14500

Noise

5

30

Check

if test passed OK

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BrillianceTM CT 40-channel Configuration Calibration Manual

Reference Detector and Converter Tests

Signal Test 1 Click Home | Utilities | Diagnostic | Service Parameters. 2 Click the Scan Parameters tab. Set Scan with X-ray to Yes and Diagnostic level to 0. 3 Perform a Head Axial scan with the following Scan parameters: — Collimation 16x2.5mm — Rotation time 1.0 sec — 120kV — 100mAs 4 Click Home | Diagnostic | Analysis 40 slices. Click Archive in the Analysis dialog. 5 In the Archive Manager click the Irs icon once to close the IRS archive. 6 Click the Irs icon again to open the IRS archive. NOTE

Refresh takes a few minutes.

7 In the Image List, select the appropriate Raw and click OK. 8 Click Raw / Bias in the Analysis dialog. The Raw/Bias display opens (see Figure 5). 9 Click Ref. Det. In the Reference Detector summary window (see Figure 6). For Signal, check the Average in the Value column. If the Signal is within the limits specified in Table 3, proceed to the next section. If the Signal is not within the limits specified in Table 3, replace the reference detector and converter and repeat the test. Table 3: Limits for Signal Test

Test

Lower limit

Upper limit

Signal

210,000

360,000

Date ______________

Check

if test passed OK

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BrillianceTM CT 40-channel Configuration Calibration Manual

Marker Alignment Test

Marker Alignment Test

WARNING

COLLISION HAZARD! WHEN MOUNTING THE PHANTOM MAKE SURE THAT IT IS POSITIONED SO THAT IT WILL NOT COME IN CONTACT WITH THE GANTRY COVERS OR THE ROTOR.

Slice Markers Alignment 1 Perform Air calibration with the following parameters: — High Resolution — Collimation 2x0.625mm — 120 kV — 0.75sec Rotation Time 2 Install the “Marker-Initial Zero” phantom (see Explanation for Step 2) approximately in the center of the scan circle. 3 Perform a Lateral Surview Scan at 90o and plan a study to correct the Gantry Tilt. Repeat the Surview Scan at 180º and correct the phantom Swivel. Plan and perform an Axial scan on the wires with the following parameters: 40-Slice Configuration Head Protocol FOV: 250 mm

Filter: EB

Collimation: 2x0.6 mm

Matrix: 512 × 512

Scan Time: 0.625 sec

Zoom: 1

120 kV, 100 mAs

Resolution: High

All the wires should be visible on both images. Philips Medical Systems Confidential and Proprietary Information

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BrillianceTM CT 40-channel Configuration Calibration Manual

Marker Alignment Test

4 Without moving the phantom, adjust the light markers on the rotor to fall onto the wires Use the 3 adjustment screws on each marker to do that. 5 Move the bed MAX UP and MAX DOWN. The lights should not shift by more than ± 2 mm while in movement. 6 Rotate the rotor. The lights should form a non-split line and shift less than ± 1 mm during the full rotation. If one of the light markers does not comply with the tests above, replace it. The allowed misalignment of the light markers is:± 1 mm for slice markers. 7 Repeat steps 1 to 3 while setting the stator light markers on the phantom.

Check

if adjusted within tolerances

Explanation for Step 2 The “Marker-Initial Zero” phantom is a special production phantom. For marker alignment in the field, use the system phantom supplied with the system. Place lead or thin metal wires in the notch on the phantom as displayed in Figure 7.)

Figure 7: Wires on System Phantom

Date ______________

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BrillianceTM CT 40-channel Configuration Calibration Manual

Marker Alignment Test

Symmetry Markers Alignment

WARNING

COLLISION HAZARD! WHEN MOUNTING THE PHANTOM MAKE SURE THAT IT IS POSITIONED SO THAT IT WILL NOT COME IN CONTACT WITH THE GANTRY COVERS OR THE ROTOR. 1 Use the image previously made and the grid to check that the phantom is approximately centered. a Scan, and by using a grid, adjust the wires to the 3, 12, and 9 o'clock positions on the image. b Move the phantom UP or DOWN and adjust the wires if necessary. c Move the bed out so that the Axial light markers shine on the phantom. d Align each symmetry marker to fall onto the respective wire. Move the phantom back in and re-check the alignment. The allowed misalignment of the markers is:± 2 mm for symmetry markers.

Check

if adjusted within tolerances

Explanation to Step 1 Place lead or thin metal wires on the system phantom as displayed in Figure 8.

Figure 8: Wires on System Phantom

Date ______________

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BrillianceTM CT 40-channel Configuration Calibration Manual

X-ray Tube Z-Direction Calibration

X-ray Tube Z-Direction Calibration NOTE

If you have replaced the A-Plane Collimator, load the A-Plane Calibration Constants (see Loading APlane Calibration Constants ) on page 70.

NOTE

Make sure that Tilt=0.

NOTE

This calibration is done on air (without phantom).

1 Click Home | Utilities| Calibration | Selective Calibration and select XRT Mechanical Align. 2 Click Results to open the Results window. 3 Click Start Calibrations. 4 Click Scan. The Z-Mechanical Results window opens (see Figure 9). Click OK. 5 Move the X-ray tube as recommended if necessary (see procedure to tube adjustment in X-ray Tube Z-direction Mechanical Alignment Procedure on page 56).

Figure 9:

6 When calibration is finished, click Exit to close the application. 7 In case of a problem perform the Bad Detectors Check for 16X2.5 collimation. Pay attention to slices 5–12 only. Check

if Calibration is OK.

Date ______________

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BrillianceTM CT 40-channel Configuration Calibration Manual

A-Plane Collimator Z-Direction Calibration

A-Plane Collimator Z-Direction Calibration NOTE

If you have replaced the A-Plane Collimator, load the A-Plane Calibration Constants (see Loading APlane Calibration Constants ) on page 70.

NOTE

Make sure that Tilt=0.

NOTE

This calibration is done on air (without phantom).

1 Click Home | Utilities | Calibrations | Selective Calibrations and select A-Plane Z-Mechanical Align. 2 Click Results to open the Results window. 3 Click Start Calibrations. 4 Click Scan. The calibration progress is displayed in the Results window. 5 If calibration is successful, a message appears in the Results window. In addition, the message in Figure 10 appears. Click OK.

Figure 10:

6 Click Exit to close the application.

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BrillianceTM CT 40-channel Configuration Calibration Manual

A-Plane Collimator Z-Direction Calibration

7 If calibration in any mode is unsuccessful, follow the on-screen instructions (see example in Figure 11). NOTE If the message appears indicating that the A-Plane is not parallel, observe the Prep Left and Prep Right values in the Results pane. If Prep Left is more than Prep Right, add shims on the left side of the collimator when the collimator is in the 6 o’clock position (refer to Appendix F Adding Shims).

Figure 11:

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BrillianceTM CT 40-channel Configuration Calibration Manual

A-Plane Collimator Z-Direction Calibration

NOTE

After completing A-plane Collimator Skew Adjustment repeat the procedure X-ray Tube Z-Direction Calibration.

NOTE

If after performing A-Plane Collimator Z-Direction Mechanical Alignment, you performed X-ray Tube Mechanical Alignment you must repeat the A-Plane Collimator Z-Direction Mechanical Alignment procedure.

Remarks In the Results window verify that the calibration results for all three modes (Static, 0.75 sec. and 0.5 sec.) are similar. After the calibration, run the DMC utility and check the Z position for all rotation. All the results should be similar.

â?’

Date ______________

Check

if Calibration is OK.

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16


BrillianceTM CT 40-channel Configuration Calibration Manual

Bad Detectors Check

Bad Detectors Check 1 Verify that there are no detectors in the Bad Segments table as follows: a Click Home | Utilities| Diagnostic and select Bad Segments. b In the Bad Segments dialog, click Manual. The Bad Detection Elements window opens. Verify that there are no bad detectors. or If the Bad Detector table is not empty, delete all the bad detectors. c Click Exit twice. 2 Verify that there are no bad detectors in the DMS as follows: a Click Home | Utilities| Diagnostic and select FEE Detector Tests. b In the FEE Detector Tests dialog, select Dead channels test (with X-ray), click Start scans and then click Start Automatic Scans. c Scan with the following parameters: Std, 0.75 sec., 40x0.625, 120 kV, 100 mAs d When the Result Table opens, click Plot. The GaphView FEE Test Results window opens minimized (see Figure 12). Maximize the window.

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BrillianceTM CT 40-channel Configuration Calibration Manual

Bad Detectors Check

Upper Limit

Lower Limit

Figure 12:

e Ensure that all graphs showing all slices are within the Upper and Lower Limits (see Figure 12). Write down the detectors and slices that are out of tolerance. Close the GaphView FEE Test Results window. f Repeat the test twice from step 2b to step 2e. Use the following collimations: 32x1.25, 16x2.5 All the other parameters remain the same as in step 2c. g Click Exit to close the FEE Detector Tests dialog. h Replace any bad detectors revealed in any of the tests and repeat the test from Step 2.

Date ______________

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BrillianceTM CT 40-channel Configuration Calibration Manual

X-ray Tube X-Direction Mechanical Alignment

X-ray Tube X-Direction Mechanical Alignment

CAUTION

Do not use the XRT X&UH-Mechanical Align calibration in the Image Calibration Selector for this calibration. 1 Perform Air Calibration of the following mode: STD, 0.75Sec, 16x0.625, 120kV 2 Install the calibration pin on the Eye phantom and zero the IN-OUT bed position on the notch of the Eye phantom. Make sure tilt=0. 3 Click Home | Utilities| Calibration | Selective Calibration and select XRT DFS Position. 4 Click Results to open the Results window. 5 Click Diagnostic Mode. 6 Click Scan.

NOTE

Ignore the instruction to zero the couch on the Eye phantom groove.

7 Select the following Scan parameters in the Protocol Parameters dialog: STD, 0.75Sec,16x0.625, 120kV, 100mA and click OK. 8 In the XRT <Dual FS> dialog, set the grid voltages to 1000, 1000, 1000, 1000 and click Scan. 9 In the Diagnostic results window (see Figure 13), check the average axis.

Figure 13: DFS Axis Results

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BrillianceTM CT 40-channel Configuration Calibration Manual

X-ray Tube X-Direction Mechanical Alignment

NOTE

Axis.Avg should be 337.625±0.04

NOTE

In case you repeat the scan, ensure that all the grid voltages are set to 1000, 1000, 1000, 1000.

10Click Exit in the Diagnostic results window and click Exit in the Image Calibration Selector. 11 If the Axis. Avg is not within tolerance a Move the tube by N=(Axis.Avg-337.625)*21.8 notches. In case N is positive move it clockwise, in case N is negative move it counter-clockwise. See X-ray Tube X-direction Mechanical Alignment Procedure in X-ray Tube Mechanical Alignment Procedures. b Repeat the entire procedure from the beginning until the Axis.Avg is within the required tolerance (337.625±0.04) and fill in the table below. Resolution

Average axes

STD 12If the Axis. Avg is within tolerance proceed to UH Collimator X-Direction Mechanical Alignment on page 21.

Date ______________

Check

if Calibration is OK

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BrillianceTM CT 40-channel Configuration Calibration Manual

UH Collimator X-Direction Mechanical Alignment

UH Collimator X-Direction Mechanical Alignment

CAUTION

Do not use the XRT X&UH-Mechanical Align calibration in the Image Calibration Selector for this calibration. 1 Perform Air Calibration of the following mode: UH, 0.75 sec, 20x0.625, 120kV 2 Install the calibration pin on the Eye phantom and zero the IN-OUT bed position on the notch of the Eye phantom. Make sure tilt=0. 3 Click Home | Utilities| Calibration | Selective Calibration and select XRT DFS Position. 4 Click Results to open the Results window. 5 Click Diagnostic Mode. 6 Click Scan.

NOTE

Ignore the instruction to zero the couch on the Eye phantom groove.

7 Select the following Scan parameters in the Protocol Parameters dialog: UH, 0.75 sec, 20x0.625, 120kV, 100 mAs, Thickness 0.625mm and click OK. 8 In the XRT <Dual FS> dialog, set the grid voltages to 1000, 1000, 1000, 1000 and click Scan. 9 In the Diagnostic results window, check the average axis.

Figure 14: DFS Axis Results

NOTE

Axis.Avg should be 337.625Âą0.02 Philips Medical Systems Confidential and Proprietary Information

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BrillianceTM CT 40-channel Configuration Calibration Manual

NOTE

UH Collimator X-Direction Mechanical Alignment

In case you repeat the scan ensure that all the grid voltages are set to 1000, 1000, 1000, 1000.

10Click Exit in the Diagnostic results window and click Exit in the Image Calibration Selector. 11 If the Axis. Avg is not within tolerance a Move the UH collimator by N=(Axis.Avg-337.625)*135.5 increments. In case N is positive move it counter clock wise, in case N is negative move it clockwise. See UHR Collimator X-Direction Mechanical Alignment Procedure in Appendix C UHR Collimator Mechanical Alignment Procedure. b Repeat the entire procedure from the beginning until the Axis.Avg is within the required tolerance (337.625Âą0.04) and fill in the table below. Resolution

Average axes

Ultra-high 12If the Axis. Avg is within tolerance proceed to UH Collimator Z-direction Mechanical Alignment on page 23.

â?&#x2019;

Date ______________

Check

if Calibration is OK

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BrillianceTM CT 40-channel Configuration Calibration Manual

UH Collimator Z-direction Mechanical Alignment

UH Collimator Z-direction Mechanical Alignment Step 1 1 Click Home | Utilities | Misc and select Show Tube Heat. 2 Perform a few helix scans or Tube Warm-up to reach the tube heat of 10%. 3 Perform a scan on air with the following parameters: U-High resolution, 0.75Sec, 120kV, 20x0.625 collimation, 100mAs 4 Click Home | Diagnostic | Analysis 40 slices. Click Archive in the Analysis dialog. 5 In the Archive Manager click Irs once to close the archive if open and click again to open. NOTE

Refresh takes a few minutes.

6 In the Image List, select the appropriate Raw and click OK. 7 Click Raw \ Bias in the Analysis dialog.

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BrillianceTM CT 40-channel Configuration Calibration Manual

UH Collimator Z-direction Mechanical Alignment

8 In the Raw/Bias Display change the following (see Figure 15): a Change Detectors to 287 -387. b In the Select Data Axis - X Axis area select Slices and in the Average Data along area, select Frames. 9 Click

.

Figure 15:

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BrillianceTM CT 40-channel Configuration Calibration Manual

UH Collimator Z-direction Mechanical Alignment

10From the Slice Statistics summary window, copy the Mean values for: — Slice 9 (A): =________ — Slice 10 (B): =________ — Slice 11 (C): =________ — Slice 12 (D): =________ Error1=(C-B)*2/(C+B) Error2=(D-A)*2/(D+A) Error1 and Error2 should be within the range of ±0.02.

Figure 16:

Table 4:

Mode

Error 1

Error 2

20x0.625 check of mechanical alignment 11 In case Error 1 and Error 2 are not within tolerances, adjust UHR Collimator as follows:

Date ______________

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BrillianceTM CT 40-channel Configuration Calibration Manual

UH Collimator Z-direction Mechanical Alignment

Case of Slices Deviation

Jig Rotation Direction

B>C

Counterclockwise

(B-C) / 1684 = N notches. Rotate the Jig N notches (use a virtual reference line or point). A quarter rotation of the Jig generates movement equal to 21892 deviation units.

B<C

Clockwise

(C-B) / 1684 = N notches. Rotate the Jig N notches (use a virtual reference line or point). A quarter rotation of the Jig generates movement equal to 21892 deviation units.

Notches to Be Moved

12Repeat steps 1-6 above until Error 1 and Error 2 are within the tolerance. 13Enter the final result in Table 4 and continue to Step 2 below.

Step 2 1 Perform a scan on air with the following parameters: U-High resolution, 0.75Sec, 120kV, 2x0.5 collimation, 100mAS 2 Click Home | Diagnostic | Analysis 40 slices. Click Archive in the Analysis dialog. 3 In the Archive Manager click Irs once to close the archive if open and click again to open. NOTE

Refresh takes a few minutes.

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BrillianceTM CT 40-channel Configuration Calibration Manual

UH Collimator Z-direction Mechanical Alignment

4 In the Image List, select the appropriate Raw and click OK. 5 Click Raw \ Bias in the Analysis dialog. 6 In the Raw/Bias Display change the following (see Figure 17): a Change Detectors to 287 -387 b In the Select Data Axis - X Axis area select Slices and in the Average Data along area, select Frames. 7 Click

.

Figure 17:

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BrillianceTM CT 40-channel Configuration Calibration Manual

UH Collimator Z-direction Mechanical Alignment

8 From the Slice Statistics summary window, copy the Mean values for (see fig.): — Slice 1 (A): = _______ — Slice 2 (B): =_______ 9 Calculate: Error= (A-B)*2/(A+B) The Error should be within the range of ±0.13. Figure 18:

10If the error is greater than the tolerance, repeat the calibration from step 1. Table 5:

Mode

Error

2x0.5 check of mechanical alignment

Date ______________

Check

if Calibration is OK

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BrillianceTM CT 40-channel Configuration Calibration Manual

XRT DFS Position First Calibration

XRT DFS Position First Calibration 1 Install the Calibration Phantom ("eye phantom"). 2 Attach the DFS calibration pin to the Calibration Phantom and use the laser light marker to position it initially on the special groove. Make sure tilt=0. 3 Raise the Patient Table to position the calibration pin 40â&#x20AC;&#x201C;60mm from the center. 4 Click Home | Utilities | Calibration | Selective Calibration and select XRT DFS Position. 5 Click Results to open the Results window. 6 Click Start Calibrations. 7 Click Scan. 8 The XRT Dual Focal Spot Pos Calibration window opens (see Figure 19).

Figure 19: XRT DFS Position window

9 Select All Modes (default setting) or the required modes to calibrate and click Start Scanning. The Calibration Philips Medical Systems Confidential and Proprietary Information

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BrillianceTM CT 40-channel Configuration Calibration Manual

XRT DFS Position First Calibration

Results window opens in the background (see Figure 20). The Calibration Results window displays the Grid Voltages (see Figure 20).

Figure 20:

The Image Calibrations Selector Results window displays the scan parameters and notifies when calibration ends successfully (see Figure 21). 10Click Exit to close the application. 11 Make a note of any mode that is not completed successfully and proceed to section In Case of a Problem.

Figure 21:

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BrillianceTM CT 40-channel Configuration Calibration Manual

XRT DFS Position First Calibration

In Case of a Problem XRT DFS Position First Calibration in Diagnostic Mode If the automatic program reports a problem at the end of calibration do the following: 1 Perform Air Calibration for the problematic mode. 2 Manually position the calibration pin on the laser marker (the system will not automatically change the couch position). 3 Click Home | Utilities | Calibration | Selective Calibration and select XRT DFS Position. 4 Click Diagnostic Mode and then click Start Calibrations. 5 In the Protocol Parameters dialog select the parameters of the required problematic scan. a Resolution, scan time, and voltage: Choose according to problematic scan b mAs: 100 for all modes c Collimation: 16x0.625 for Std and High resolution 20x0.625 for UH resolution 6 Click OK and then click Scan. The Diagnostic Results window opens (see Figure 22). 7 Perform a scan with the â&#x20AC;&#x153;problematicâ&#x20AC;? scan parameters and check the Axis values (see Figure 22).

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BrillianceTM CT 40-channel Configuration Calibration Manual

XRT DFS Position First Calibration

Change Grid Voltages Here Current Grid Voltages

Figure 22:

8 Observe the Average values for Axis1 and Axis2. If the values are within the tolerances, click Exit. If the values are not within the tolerances, add or subtract from the Current Grid Voltages and enter new values in the New field (see Figure 22) as indicated in Table 6. 9 Click Re-scan. Repeat the steps 8 and 9 until all values are within the tolerance. 10Click Save as Default.

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BrillianceTM CT 40-channel Configuration Calibration Manual

XRT DFS Position First Calibration

Table 6:

V1

V2

V3

V4

Axis 2 above Tolerance

Current-10V

Current+10V

Axis 2 below Tolerance

Current+10V

Current-10V

Tolerance for Axis 1 (FS-1) position = 337.355–337.395 (337.375±0.020) Axis 1 above Tolerance

Current-10V

Current+10V

Axis 1 below Tolerance

Current+10V

Current-10V

Tolerance for Axis 2 (FS-2) position = 337.855–337.395 (337.875±0.020)

11 Repeat step 5 to step 10 in procedure In Case of a Problem. NOTE

If you change the values of V1 and V2 and/or V3 and V4, the sum of each pair must be constant. It is possible to calibrate each focal spot position independent of the other.

NOTE

In case the values are unstable perform a Head Axial scan with the same parameters as the problematic mode on the Calibration pin and on the system phantom head layer. Verify that no artifacts appear on the image.

Date ______________

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BrillianceTM CT 40-channel Configuration Calibration Manual

XRT Focal Spot Width Calibration

XRT Focal Spot Width Calibration

CAUTION

Use only XRT FS Width in Diagnostic Mode as described below.

CAUTION

Ensure that there are no objects in the scan field. 1 Perform Air Calibration for the modes listed in Table 9. 2 Insert the Tungsten Slit (refer to Inserting and Removing the Tungsten Slit). 3 Click Home | Utilities | Calibrations | Selective Calibrations and select XRT FS Width. 4 Click Results to open the Results window. 5 Click Diagnostic Mode.

NOTE

Ignore the instruction to zero the couch on the Eye phantom groove and the instruction regarding the pin. Follow all other instructions in the pop-up Follow the Instructions message.

6 Click Start Calibrations and then click Scan. The Protocol Parameter dialog opens. 7 Select scan parameters from Table 9 and perform scans at 100 mAs. Click OK. 8 The XRT (Dual FS) dialog open. Click Scan. The Diagnostic Results window opens (see Figure 23).

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BrillianceTM CT 40-channel Configuration Calibration Manual

XRT Focal Spot Width Calibration

Change Grid Voltages Here Current Grid Voltages

Figure 23: Diagnostic Results Window

9 Observe the Average for Wo2 fs-1 and Wo2 fs-2. If the values are within the tolerances, click Exit and proceed to Step 12. If the values are not within the tolerances, add or subtract from the Current Grid Voltages and enter new values in the New field. NOTE

Make sure that the suggested Grid Voltages keep the difference of V2-V1 and the difference of V4-V3. It is possible to calibrate each focal spot width independent of the other.

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BrillianceTM CT 40-channel Configuration Calibration Manual

WARNING

XRT Focal Spot Width Calibration

DO NOT ENTER A GRID VOLTAGE VALUE OF LESS THAN 50V. 10Click Re-scan. Repeat steps 9 and 10 until the Average for Wo2 fs-1 and Wo2 fs-2 are within the tolerance. Enter the values in Table 9 and calculate the Average Width for each mode. 11 Click Save as Default and then click Exit. 12Repeat the procedure from steps 6–11 for all modes listed in Table 9. Table 7: DFS Width Tolerances

Resolution

Tolerances for Wo2 fs-1 and Wo2 fs-2

Std

1.0–1.2mm (1.1±0.1mm)

High and UH

0.5–0.7mm (0.6±0.1mm)

Table 8:

V1

V2

V3

V4

Tolerance for Axis 1 (FS-1) position = 337.355–337.395 (337.375±0.020) Average for Wo2 fs-1 and Wo2 fs-2 is above the tolerance

Current+20V

Current+20V

Current+20V

Current+20V

Average for Wo2 fs-1 and Wo2 fs-2 is below the tolerance

Current-20V

Current-20V

Current-20V

Current-20V

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BrillianceTM CT 40-channel Configuration Calibration Manual

XRT Focal Spot Width Calibration

Table 9:

Mode

Width of FS1

Width of FS2

Average Width = ([FS1 + FS2] / 2)

STD, 0.42Sec, 16x2.5, 80kV STD, 0.42Sec, 16x2.5, 120kV STD, 0.42Sec, 16x2.5, 140kV High, 0.42Sec, 16x0.625, 80kV High, 0.42Sec, 16x0.625, 120kV High, 0.42Sec, 16x0.625, 140kV UH Res, 0.42Sec, 20x0.625, 80kV UH Res, 0.42Sec, 20x0.625, 120kV UH Res, 0.42Sec, 20x0.625, 140kV STD, 0.75Sec, 16x2.5, 80kV STD, 0.75Sec, 16x2.5, 120kV STD, 0.75Sec, 16x2.5, 140kV High, 0.75Sec, 16x0.625, 80kV High, 0.75Sec, 16x0.625, 120kV High, 0.75Sec, 16x0.625, 140kV UH Res, 0.75Sec, 20x0.625, 80kV UH Res, 0.75Sec, 20x0.625, 120kV UH Res, 0.75Sec, 20x0.625, 140kV 13Remove the Tungsten Slit (refer to Inserting and Removing the Tungsten Slit). Date ______________

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BrillianceTM CT 40-channel Configuration Calibration Manual

XRT DFS Position Final Step

XRT DFS Position Final Step Repeat the XRT DFS Position Calibration procedure XRT DFS Position First Calibration on page 29.

Warm Up Procedure Before Phantom and Air Calibration 1 In order to warm up the tube and the scanner, perform an axial range with the following parameters: 120kV, 100mAs, 0.75sec rotation time, number of scans =10, increment = 0. 2 Do not end the study. After 10 minutes repeat the warm up procedure. 3 You may now end the study.

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BrillianceTM CT 40-channel Configuration Calibration Manual

Phantom Calibrations

Phantom Calibrations WARNING

COLLISION HAZARD! WHEN MOUNTING THE PHANTOM MAKE SURE THAT IT IS POSITIONED SO THAT IT WILL NOT COME IN CONTACT WITH THE GANTRY COVERS OR THE ROTOR. 1 Verify that the couch is centered Left–Right within ±2 mm. 2 Perform warm-up as follows: a Perform Axial range scans using the following parameters: 120 kV, 250 mAs, 0.75 sec. RT, number of scans = 5, increment=0 b Do not end the study. c Repeat Step a after ten minutes. d End the study. 3 From the Desktop click the Service Tools icon. Click Diagnostic Tools | DMS Tools | DMS Utilities and select DMS Temperature Monitor. 4 Click Start Reading. Check if the temperature is stable within ±1o for the last five minutes. 5 Adjust the Gantry tilt to zero. 6 Install the Calibration Phantom (eye phantom). Use the laser light marker to position it initially on the special groove. 7 Reset the bed position to zero at this location. 8 Move the bed to MAX down and raise it a few millimeters (the down-direction LED on the bed control panel should be lit). 9 Click Home | Utilities | Calibration | Selective Calibration and select Phantom. 10Click Results. 11 Click Start Calibrations. 12Click Scan. After Tube Warm-up is complete the Phantom Calibration dialog appears (see Figure 24). 13Click Start Scanning or select the required mode and then click Start Scanning. 14When the calibration is complete click Exit to close the application.

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BrillianceTM CT 40-channel Configuration Calibration Manual

Phantom Calibrations

Figure 24: Phantom Calibration window

WARNING

THE GANTRY ROTATES FOR ONE MINUTE BEFORE AND BETWEEN THE CALIBRATION MODES FOR TEMPERATURE STABILIZATION.

â?&#x2019;

Date ______________

Check

if Calibration is OK

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BrillianceTM CT 40-channel Configuration Calibration Manual

Air Calibration

Air Calibration 1 Perform warm-up as follows: a Perform Axial range scans using the following parameters: 120 kV, 250 mAs, 0.75 sec. RT, number of scans = 5, increment=0 b Do not end the study. c Repeat Step a after ten minutes. d End the study. 2 From the Desktop click the Service Tools icon. Click Diagnostic Tools | DMS Tools | DMS Utilities and select DMS Temperature Monitor. Click Start Reading. 3 Observe the temperature for Left MB and Right MB. 4 Check if the temperature is stable and same as in Phantom Calibration within Âą2o (see explanation below). 5 Click Home | Utilities. 6 Select Air Calibration | All Calibrations. NOTE

If there was an interruption of about five hours or more in the Image Quality process or if Gantry power was switched OFF, perform Air Calibration again before any of the following tests.

â?&#x2019;

Date ______________

Check

if Calibration is OK

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BrillianceTM CT 40-channel Configuration Calibration Manual

HCOR Calibration

HCOR Calibration

WARNING

COLLISION HAZARD! WHEN MOUNTING THE PHANTOM MAKE SURE THAT IT IS POSITIONED SO THAT IT WILL NOT COME IN CONTACT WITH THE GANTRY COVERS OR THE ROTOR. 1 Click Home | Utilities | Diagnostic and select Service Parameters. 2 Click the Recon Parameters tab and verify that both Phantom Calibration and Image Balance are set to Yes. Click OK. 3 Perform Air Calibration for all relevant modes within an hour before this test. 4 Scan the Physics System Phantom sections—water layer for "Head", and Body section for "Body" with the following protocols: Thickness—reconstructed slice thickness (mm) Table 10: 40-channel Configuration HCOR Calibration Modes

Scan # Phantom Scan Parameters: FOV, Kilovolt, Collimation (Thickness), Resolution, Rot. Time, mAs, Filter

NOTE

1

Head

FOV 250, 80kV, 32x1.25 (1.25mm), STD, 0.75s, 200 mAs, EB

2

Head

FOV 250, 120 kV, 32x1.25 (1.25mm), STD, 0.75s, 200 mAs, EB

3

Head

FOV 250, 140 kV, 32x1.25 (1.25mm), STD, 0.75s, 200 mAs, EB

4

Body

FOV 350, 80 kV, 32x1.25 (1.25mm), STD, 0.75s, 200 mAs, B

5

Body

FOV 350, 120 kV, 32x1.25 (1.25mm), STD, 0.75s, 200 mAs, B

6

Body

FOV 350, 140 kV, 32x1.25 (1.25mm), STD, 0.75s, 200 mAs, B

All measurements of CT numbers should be done on 2x2 image viewer (four images on screen) maximum size window.

5 Place a 7,000±500 mm² area ROI at the center of the displayed Head images and a small ROI on the water insert of the Body phantom images. Measure the CT number on two inner slices (16, 17) and calculate the average. Philips Medical Systems Confidential and Proprietary Information

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BrillianceTM CT 40-channel Configuration Calibration Manual

HCOR Calibration

6 Click Home | Utilities | Calibration and select HCOR. The H-Correction window opens. 7 Click Change for the appropriate mode. The Calculate new Hcor value dialog opens. 8 In the Measured CT: field type the CT number calculated in Step 5. Ensure that the value in the Desired CT: field is 0.0. 9 Click ACCEPT to accept the new HCOR value. The DIFFERENCE FROM DEFAULT (%) should not deviate more that ±1.5%. Fill in the results in Table 11. 10Repeat the scan with the same parameters and ensure that the Measured CT number is within the 0 ±2 CT numbers tolerance. 11 Repeat Steps 4–10 for all the modes in Table 10 and make necessary corrections these modes. 12When finished, click Accept and Exit to save the results and close the application. Table 11: 40-channel Configuration CT Correction Factors Table

Mode (INNER slices, Thickness 1.5 mm)

Current Factor

Default Factor

Difference from Default (%)

Desired CT

Head Low kV (80kv)

0.9500

0

Medium kV (120kV)

1.0700

0

High kV (140 kV)

1.1075

0

Low kV (80kv)

1.0050

0

Medium kV (120kV)

1.0900

0

High kV (140kV)

1.1370

0

Body

Date ______________

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BrillianceTM CT 40-channel Configuration Calibration Manual

System Calibrations Backup

System Calibrations Backup Perform system calibrations backup as follows: 1 Click Home | Utilities | Calibrations | Backup/Restore. The Backup/Restore dialog opens (see Figure 25). 2 Select the Backup tab. 3 Click Browse and select the desired destination (e.g. hard drive, EOD). 4 Select the required check boxes for backup and click Start Backup. 5 When backup is complete, click OK. 6 Click Close in the Log window. 7 Click Exit on Backup/Restore dialog.

Figure 25:

Date ______________

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BrillianceTM CT 40-channel Configuration Calibration Manual

The Calibration Testing Graphic User Interface

Appendix A: The Calibration Testing Graphic User Interface Launching the Image Calibration Selector To launch the Image Calibration Selector in service mode do the following: 1 Logon as philips_service (password service_only). 2 On the Windows Desktop double-click

. The Philips CT Scanner application opens.

3 Click Home on the Main menu 4 On the Home Tools bar select Utilities | Calibrations | Selective Calibrations (see Figure 26).

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BrillianceTM CT 40-channel Configuration Calibration Manual

Launching the Image Calibration Selector

Home Button Calibration Selective Calibration

Utilities

Figure 26: Launch Selective Calibrations Philips Medical Systems Confidential and Proprietary Information

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BrillianceTM CT 40-channel Configuration Calibration Manual

Launching the Image Calibration Selector

5 The Image Calibrations Selector window appears (see Figure 27).

Automatic Mode

Calibration Test Selection List

Diagnostic (manual) Testing Mode Figure 27: Selective Calibrations GUI

The Image Calibration Selector is designed to integrate the calibration tools into a single interface. Calibrations can be selected independently or as part of a Testing Reason (not implemented in current version) Calibration modes are as follows: â&#x20AC;˘

User Interface Mode

â&#x20AC;˘

Diagnostic mode

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BrillianceTM CT 40-channel Configuration Calibration Manual

Launching the Image Calibration Selector

Automatic Mode

CAUTION

Do not activate this mode in this version.

User Interface Mode To enable the User mode clear both of the Automatic and Diagnostic mode selections. In this mode each test is performed automatically but the transition from test to test is initiated by the FSE.

Diagnostic Mode To perform diagnostic test manually, click Diagnostic Mode the Diagnostic Warning appears (see Figure 28). Click OK to continue.

Figure 28:

Select the appropriate test to perform. The selected calibration test dialog box appears and the FSE performs the test procedure. This mode is preferred when a problem is reported in the automatic calibration mode. Additional information can be gathered in the manual testing that can be used in solving the problem.

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BrillianceTM CT 40-channel Configuration Calibration Manual

Launching the Image Calibration Selector

Image Calibration Selector Functions Results Window Open the Results window to view previous test information or follow the current calibration procedure. 1 Click Results to open the Results window (see Figure 29).

Figure 29:

2 Click Past Results to view the log of the previous testing. Philips Medical Systems Confidential and Proprietary Information

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BrillianceTM CT 40-channel Configuration Calibration Manual

Launching the Image Calibration Selector

3 Click Current Result to return to the current testing log.

Recover If the calibration test is interrupted for any reason click Recover to run the selected test again (see Figure 30). When you click Recovery, the following appear in the Status column: •

The status of completed tests

Next test to be performed when you click Start Calibrations

Test that was interrupted for any reason (error during test or terminated by the user)

Figure 30:

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BrillianceTM CT 40-channel Configuration Calibration Manual

Launching the Image Calibration Selector

Status The calibration procedure or sequence status appears in the Status section of the Image Calibration Selector window. The status describes the test operation currently performed and the test result: Error, Done and other.

Last Done The Last Done section of the Image Calibration Selector window contains the date the test was last completed.

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BrillianceTM CT 40-channel Configuration Calibration Manual

Launching the Image Calibration Selector

Start Calibrations To start the calibration test procedure or the sequence of calibrations click Start Calibrations. There are two different windows that appear depending on type of calibrations performed (see Figure 31 and Figure 32).

Figure 31: Instructions that no object should be in the scan field

NOTE

Disregard Step 3 in the message in Figure 31.

Follow the instructions and click Scan.

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BrillianceTM CT 40-channel Configuration Calibration Manual

Launching the Image Calibration Selector

Figure 32: Instructions to install eye phantom

NOTE

Disregard Step 4 in the message in Figure 32.

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BrillianceTM CT 40-channel Configuration Calibration Manual

Launching the Image Calibration Selector

Follow the instructions below. 1 Remove the calibration pin from the Eye phantom assembly bracket (see Figure 33). 2 Mount the calibration pin on the phantom according to Figure 34.

Eye Phantom Assembly Bracket Calibration Pin

Calibration Pin Figure 33:

Figure 34:

3 Mount the phantom on the couch phantom holder and zero the couch on the laser marker on the phantom notch (see Figure 35). Use this phantom for the following calibrations: •

X-ray Tube X-Direction Mechanical Alignment

UH Collimator X-Direction Mechanical Alignment

X-ray Tube DFS Position Calibration

Phantom Calibrations

Notch

Figure 35:

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BrillianceTM CT 40-channel Configuration Calibration Manual

Launching the Image Calibration Selector

Exit Click Exit to close the Image Calibrations Selector.

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BrillianceTM CT 40-channel Configuration Calibration Manual

X-ray Tube Mechanical Alignment Procedures

Appendix B: X-ray Tube Mechanical Alignment Procedures X-ray Tube Z-direction Mechanical Alignment Procedure Adjust the X-ray tube Z-direction alignment as follows:

X-Ray Tube X-Direction alignment assembly

1 Position the tube in the 12 oâ&#x20AC;&#x2122;clock position (see Figure 36).

X-Ray Tube Z-Direction alignment assembly Figure 36: X-ray Tube and its components

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BrillianceTM CT 40-channel Configuration Calibration Manual

X-ray Tube Z-direction Mechanical Alignment Procedure

2 Loosen the four bolts securing the X-ray Tube to the rotor: â&#x20AC;&#x201D; Two lower bolts in the front of the tube (see Figure 37) â&#x20AC;&#x201D; Two upper bolts (see Figure 38) Upper bolt

Lower screw Figure 37: X-ray Tube Lower Securing Bolt

X-ray Tube X-Direction alignment assembly Figure 38: X-ray Tube Upper Securing Bolt

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BrillianceTM CT 40-channel Configuration Calibration Manual

X-ray Tube Z-direction Mechanical Alignment Procedure

3 Loosen the screws shown in Figure 39. 4 Loosen the screws on the right side of the X-ray Tube shown in Figure 38. Loosen these screws for X-ray Tube Z-Direction alignment

Rotate this screw for the X-ray Tube Z-Direction alignment Figure 39: X-ray Tube Z-direction Alignment Assembly

Loosen these screws for X-ray Tube Z-Direction alignment Figure 40: X-ray Tube Z-direction Alignment Assembly

5 Rotate the screw shown in Figure 39 as follows: a Rotate the screw in the required direction until you feel resistance. Start notch count from this position. b Rotate the required number of notches as indicated by the message in X-ray Tube Z-Direction alignment procedure. 6 Tighten the two front screws to torque 13.6Nm/10 FT-LBS and two side screws to torque 5.42Nm/4 FT-LB. 7 Tighten the two lower and two upper bolts to torque 76 Nm/56 FT-LB.

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BrillianceTM CT 40-channel Configuration Calibration Manual

X-ray Tube X-direction Mechanical Alignment Procedure

X-ray Tube X-direction Mechanical Alignment Procedure Adjust the X-ray tube X-direction alignment as follows:

X-Ray Tube X-Direction alignment assembly

1 Position the tube in the 12 o’clock position (see Figure 36).

X-Ray Tube Z-Direction alignment assembly

Figure 41: X-ray Tube and its components

2 Loosen the four bolts securing the X-ray Tube to the rotor: — Two lower bolts in the front of the tube (see Figure 37) — Two upper bolts (see Figure 38)

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BrillianceTM CT 40-channel Configuration Calibration Manual

X-ray Tube X-direction Mechanical Alignment Procedure

Upper bolt

Lower screw Figure 42: X-ray Tube Lower Securing Bolt

X-ray Tube X-Direction alignment assembly Figure 43: X-ray Tube Upper Securing Bolt

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BrillianceTM CT 40-channel Configuration Calibration Manual

X-ray Tube X-direction Mechanical Alignment Procedure

3 Loosen the screws shown in Figure 39. 4 Loosen the screws on the right side of the X-ray Tube shown in Figure 38. Loosen these screws for X-ray Tube Z-Direction alignment

Rotate this screw for the X-ray Tube Z-Direction alignment Figure 44: X-ray Tube Z-direction Alignment Assembly

Loosen these screws for X-ray Tube Z-Direction alignment Figure 45: X-ray Tube Z-direction Alignment Assembly

5 Rotate the screw shown in Figure 39 as follows: a Rotate the screw in the required direction until you feel resistance. Start notch count from this position. b Rotate the required number of notches as indicated by the message in X-ray Tube Z-Direction alignment procedure. 6 Tighten the two front screws to torque 13.6Nm/10 FT-LBS and two side screws to torque 5.42Nm/4 FT-LB. 7 Tighten the two lower and two upper bolts to torque 76 Nm/56 FT-LB. 1 Loosen the four bolts securing the X-Ray Tube to the rotor: â&#x20AC;&#x201D; Two lower bolts in the front of the tube (see Figure 37) â&#x20AC;&#x201D; Two upper bolts (see Figure 38)

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BrillianceTM CT 40-channel Configuration Calibration Manual

X-ray Tube X-direction Mechanical Alignment Procedure

Lower screw

Figure 46: The X-Ray Tube lower securing bolt

Upper bolt

X-Ray Tube X-direction alignment assembly

Figure 47: X-Ray Tube upper securing bolt

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BrillianceTM CT 40-channel Configuration Calibration Manual

X-ray Tube X-direction Mechanical Alignment Procedure

2 Loosen the screws shown in Figure 48.

The two screws to loosen for the X-ray Tube Z-Direction alignment Figure 48: The X-Ray Tube X-direction alignment assembly

3 Loose the screws on the right side of the X-Ray Tube shown in the Figure 49 Rotate this screw for the X-Ray Tube X-direction alignment

The side screws to loose for the XRay Tube X-direction adjustment Figure 49: The X-Ray Tube X-direction alignment assembly

4 Rotate the screw shown on the Figure The X-Ray Tube X-direction alignment assembly Philips Medical Systems Confidential and Proprietary Information

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BrillianceTM CT 40-channel Configuration Calibration Manual

X-ray Tube X-direction Mechanical Alignment Procedure

Rotate the screw to in the required side to remove the backlash by filling the resistance and than rotate the required quantity of the notches 5 Tighten the two front screws to torque 13.6Nm/10 FT-LBS and two side screws to torque 5.42Nm/4 FT-LB 6 Tighten the two lower and two upper bolts to torque 76 Nm/56 FT-LB.

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BrillianceTM CT 40-channel Configuration Calibration Manual

UHR Collimator Mechanical Alignment Procedure

Appendix C: UHR Collimator Mechanical Alignment Procedure UH Collimator Z-Direction Mechanical Alignment Procedure 1 Order the scan with the standard resolution to move the UH Collimator to the out position to ease its adjustment. 2 Cancel the study to stop the Gantry rotation. 3 Disable the rotor rotation by the turning off the Drive switch. 4 Unlock the electro-mechanical brake and position the DMS in the 12 oâ&#x20AC;&#x2122;clock position. The UH Collimator Adjustment screws shown in Figure 50. The UH Collimator Adjustment Jig shown in Figure 51. NOTE

Use some virtual reference line when rotating the Jig.

UH-Collimator Adjustment screws Figure 50: UH-Collimator Adjustment screws

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BrillianceTM CT 40-channel Configuration Calibration Manual

UH Collimator Z-Direction Mechanical Alignment Procedure

5 Use the results from Calibration Stageâ&#x20AC;&#x201D;(see Step 8 on page 24) in Section UH Collimator Z-direction Mechanical Alignment. Insert the Jig as shown in Figure 52 and adjust according to the message received.

Vertical Reference Lines

Figure 51: UH-Collimator Adjustment Jig

Vertical Reference Lines

Figure 52: UH-Collimator Adjustment

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UHR Collimator X-Direction Mechanical Alignment Procedure

UHR Collimator X-Direction Mechanical Alignment Procedure Perform UHR Collimator mechanical alignment in the X-direction as follows: 1 Disable the Gantry rotation by the turning off the Drive switch. 2 Unlock the electro-mechanical brake and position the DMS in the 6 oâ&#x20AC;&#x2122;clock position. 3 Adjust the UHR Collimator position as follows: a Release the four screws that secure the UHR Collimator (see Figure 53). b Push the UHR Collimator slightly to the left. c Rotate the micrometer the number of notches and in the direction according to the instructions listed in the message that you received after performing the procedure in Section UH Collimator X-Direction Mechanical Alignment on page 21. d Push the UHR Collimator to the right, flush with the micrometer. Hold the UHR Collimator in this position. e Tighten the four screws to a torque of 10 Nm. Clockwise and Counter-clockwise directions are determined when looking at the micrometer from the knurled end (right side of UHR Collimator when DMS is in 6 oâ&#x20AC;&#x2122;clock position).

Clockwise Counter-Clockwise

NOTE

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BrillianceTM CT 40-channel Configuration Calibration Manual

Inserting and Removing the Tungsten Slit

Appendix D: Inserting and Removing the Tungsten Slit Insert the Tungsten Slit as follows: 1 Open two screws (one on each side) that secure the Tungsten Slit to the X-ray tube base (see Figure 56 and Figure 57). 2 Move the Tungsten Slit to the left side as shown in Figure 54 and Figure 55. 3 Insert and tighten the screw on the left side as shown in Figure 54.

Figure 55:

Figure 54:

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BrillianceTM CT 40-channel Configuration Calibration Manual

Inserting and Removing the Tungsten Slit

4 Remove the Tungsten Slit as follows: a Release the screw on the left side of the Tungsten Slit (see Figure 54). b Move the Tungsten Slit to right position (see Figure 56 and Figure 57). c Insert and tighten the screws on both sides of the Tungsten Slit.

Figure 57:

Figure 56:

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BrillianceTM CT 40-channel Configuration Calibration Manual

Loading A-Plane Calibration Constants

Appendix E: Loading A-Plane Calibration Constants NOTE

Each A-Plane Collimator is supplied with an A-Plane Calibration Constants CD. This CD is delivered with each system or with the replacement A-Plane Collimator.

1 Verify that the A-Plane serial number on the A-Plane Calibration Constants CD matches the serial number on the actual A-Plane. 2 Insert the A-Plane Calibration Constants CD into the Host computer CD-ROM drive. 3 On the Host computer create a folder on drive D: and name it APLANE. Copy the three files from the CD to the APLANE folder. 4 Run the DMC Utility from the Desktop. Press icon.

-D and then click the Service Tools

5 Click Diagnostics | DMS Utilities and select DMC Utilities. 6 In the DMC Utility window, click ReadJIGFile (second icon from the left -see Figure 58).

Figure 58:

7 Select the file: D:\APLANE\ XXXXXXX.clb.

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Loading A-Plane Calibration Constants

8 Select ”SetAC”. To verify the values were stored correctly select ”Clear” and then ”GetAC”. Make sure the 0,1,2,3 were replaced by new values. 9 Select the ”A Offsets” tab and ”SetAOffsets”. To verify the values were stored correctly select ”Clear” and then ”GetAOffsets”. Make sure the default value of 511 was replaced by the new values.

Figure 59:

10Select the ”A Plane” tab again. Select ”SetAC”. To verify the values were stored correctly select ”Clear” and then ”GetAC”. Make sure the 0,1,2,3 were replaced by new values. 11 Select the A Offsets tab and click SetAOffset; a calibration progress dial displays. 12When the calibration is complete, verify the values were stored correctly by clicking Clear and then clicking GetAOffset. NOTE

If the Estop loop is closed, this operation opens the Estop loop.

13Select the ZRPM tab and click get ZC. Verify that none of the Z parameters are >2000 or <-2000. 14Click Clear and then click set ZC. Verify that the Z RPM parameters are set to 0, 1, 2, 3, 4, and 5.

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15Press

Loading A-Plane Calibration Constants

-D again to return to the application.

16Eject the CD from the Host drive and place it in the system data book. 17Run through the system calibrations as indicated in section Calibration Criteria Matrix.

CAUTION

Do not enter values from the .clb file manually into the DMC Utility. Doing so will cause the A-plane to operate incorrectly.

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Adding Shims

Appendix F: Adding Shims If the A-Plane Collimator is not aligned, the user must determine where to place the self-adhesive shim(s). 1 Position the rotor with the collimator at 6 o’clock position, detector ”1” on the DMS is on the left-most side and detector ”672” is on the right as shown in Figure 60.

Figure 60:

2 With the A-Plane collimator removed from the rotor and observing it from the rear, the ”1” side is on the left and the ”672” side is on the right as shown above.

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Adding Shims

3 Remove the adhesive liner from the shim and press it to the rear of the collimator-mounting boss on the ”Detector 672” side. Note: If two shims are required, place the 2nd shim on top of the 1st shim. The proper placement is between the two mounting holes as shown in Figure 61. NOTE

95% of the systems have shown skew on the ”672” Detector side. If you happen to see an increase of skew after shim(s) installation, remove the collimator and position the shim(s) on the opposite side.

Figure 61:

4 Run through the system calibrations as indicated in section Calibration Criteria Matrix.

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Rotor Balance

Appendix G: Rotor Balance Check Rotor Balance as follows: 1 Click Home | Utilities| Calibration | Selective Calibration and select Rotor Balance Test. 2 Click Results to open the Results window. 3 Click Start Calibrations. 4 Click Scan and wait until calibration is performed (calculations take 1–2 min.). 5 If the calibration procedure is completed successfully, the message “Calibration finished successfully” in the Results window. Click Exit to close the application. If the calibration procedure is not completed successfully, follow the recommendations in the on-screen instructions.

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Patient Support Calibrations

Appendix H: Patient Support Calibrations Patient Support Horizontal Calibration The following procedure will calibrate the patient support horizontal position.

WARNING

HAZARDOUS VOLTAGES ARE PRESENT DURING THIS PROCEDURE. 1 The Gantry power should be on. Log in to Service mode as Philips_Service. 2 Move the couch carbon top to its fully extended position toward the gantry. The encoder is underneath the carbon top. There are two different types of encoder assemblies: — 362415 Stegmann encoder (yellow), reset it by removing the cover and depressing the small button inside absolute encoder (see Figure 62). — 362416 Baumer encoder, momentarily connect the jumper cable L22520 to P766 as shown Do not leave the jumper on P766 (see Figure 63). 3 Replace cover on 362415 absolute encoder if applicable. The Couch zero position is now set. Back up the NVRAM for the Couch. Refer to the Diagnostic GUI manual. See “Upload and Download of NVRAM” on the index page.

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Patient Support Horizontal Calibration

Cover on this side

362415 Absolute Encoder

Relative Encoder

Figure 62: Absolute and Relative Encoder - 362415

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Patient Support Horizontal Calibration

L22520

P766

P766

L22520

Figure 63: 362416 Encoder Reset

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Patient Support Vertical Calibration

Patient Support Vertical Calibration

This tool is used to Calibrate the Couch Vertical position. The calibration is performed by: 1 Putting the Couch in Vertical Calibration mode (after the Estop is closed). 2 Using a pencil: a Mark 90mm. b Put the Couch to1030 mm (40.55 inches) above the floor. c Then send the appropriate command. 3 Using the same pencil mark at 90mm, a Put the Couch to 560 mm (22.05 inches) above the floor. b Then send the appropriate command. 4 Exiting Couch Vertical Calibration mode. A series of informational messages will appear during the calibration and they shall guide the user through the procedure. To begin, click on the button labeled Begin. Clicking Start will send a command to the Couch that puts it in Vertical Calibration mode. The Couch Horizontal position should be all the way out away from the Gantry to make sure no collision is possible with the Gantry while calibrating.

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BrillianceTM CT 40-channel Configuration Calibration Manual

Patient Support Vertical Calibration

Couch Vertical Position display This row shows the value of the couch Vertical position as sent from the Gantry.

Estop status When in Calibration mode, this row shall check the Estop status from the Gantry. If the Estop is already closed, the calibration shall continue. Otherwise, the tool shall send the necessary commands to put the Gantry in a pre estop state, then asks the user to turn the Key switch for the Estop to Close. There are some cases where the Gantry is in a bad state and it needs to be fixed before proceeding with this calibration.

Calibration There are 2 positions for the Vertical Couch calibration: â&#x20AC;˘

1030 mm (40.55 inches) from the ground

560 mm (22.05 inches) from the ground You are asked to put the couch to each of these positions, then click on the corresponding button. When the couch is at 560 mm (22.05 inches) from the ground, the display of the couch Vertical position should be -469 mm +/ - 2 mm. If not, the calibration will not be successful. The tool is asking explicitly for the Vertical Position from the couch when the user presses the button for the 560 mm (22.05 inches) position, because the couch might not be updating its position when stopped. â&#x20AC;˘

Abort At any time during the calibration, the user may click "Abort Test" to terminate the operation. This will take the Couch out of vertical calibration mode. It is recommended to re-calibrate from the start after an abort is issued.

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BrillianceTM CT 40-channel Configuration Calibration Manual

Main Drives and Angulation Setup for Original MDP & TDP Systems, and Setup for GMP

Appendix I: Main Drives and Angulation Setup for Original MDP & TDP Systems, and Setup for GMP Equip Systems Purpose The purpose of this procedure is to provide instruction for commissioning the scan frame drive motor controller and for the calibration of the Gantry angulation and tilt drive systems.

Scope This procedure is to be used to power up and verify the proper operation of the motor controller, angular position system and drive positioning of the scanner. The drive commissioning portion of this procedure needs to be performed when a scanner is operated for the first time or when either the motor or motor controller (â&#x20AC;?SpindleBlokâ&#x20AC;?) is replaced.

Safety Precautions Before performing this procedure, ensure that all components affixed to the rotating scan frame are properly secured and that any tools and test equipment have been removed from the vicinity of the scanner. Rotate the scan frame through one entire revolution by hand to verify that no components or fasteners are loose.

(MDP & TDP Systems) Equipment Required Personal Computer, Oscilloscope,8060A true RMS DVM, digital protractor, serial communication cable, RS232 to RS485 converter (SemiPower P/N 85-0151-01 CA-11 Communication cable kit). C:\questor\mx8000Dual\Files\Service\Options\Motor\SemiPow folder on your PC. NOTE

Before angulation calibration can proceed the DMC, GHOST, MDP and CONTROL LINK must be functional and loaded to the latest firmware revisions.

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(GMP Equip Systems) Equipment Required

(GMP Equip Systems) Equipment Required Personal Computer, Oscilloscope, Fluke 8060A true RMS DMM (or equivalent), digital protractor, serial communication cable, and C:\questor\mx8000Dual\Files\Service\Options\Motor\SemiPow folder on your PC. NOTE

Before angulation calibration can proceed the DMC, GHOST, GMP, and CONTROL LINK must be functional and loaded to the latest firmware revisions.

Angulation Procedure 1 Switch the Gantry to service mode. Disable power to the main drives by opening the fuse block (F357, F358, and F359). Turn-on power to the Gantry. 2 On the R2D board connect channel 1 of an oscilloscope to P4 pin 1. Connect the ground to P4 pin 10. Verify an 8kHz. sine wave is present. Set the scope to trigger on this channel. 3 Connect channel 2 of the scope to P4 pin 3 (SINE). Slowly rotate the rotor clockwise until the trace on channel 2 is at its’ lowest value (null position). 4 Connect the DMM to P4, pin 4 (COSINE) and P4, pin 10 (Ground). Adjust the gain pot (R127) on the MDP/GMP board to obtain 1.9 VAC (±10mV). 5 Record COSINE voltage. 6 Connect channel 2 of the scope to P4 pin 4. Slowly rotate the rotor clockwise until the trace on channel 2 is at it’s lowest value (null position). 7 Connect the DMM to P4, pin 3 (SIN) and P4, pin 10 (Ground). Verify that the voltage is within ±20mV of the voltage documented for COSINE. 8 Record SINE voltage. 9 Rotate the rotor clockwise until the tube is at the 12 o’clock position. Using a torpedo level, verify that the tube shelf is level. 10Attach channel 1 of the scope to P7 pin 9 (ADREF) of the R2D board. Sync on this signal. Attach the second channel to P4 pin 3 (SIN). 11 Slowly rotate the rotor from the level position until SIN is at a null. The SIN should increase in amplitude in phase with ADREF when the rotor is moved clockwise. If the amplitude increases out of phase with ADREF rotate the rotor until the desired phase relationship exists. 12With the SIN at the desired orientation with ADREF and at a null move channel 2 to P7 pin 4 (COSINE). The signal Philips Medical Systems Confidential and Proprietary Information

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Main Drive Commissioning Procedure

should be at a peak and in phase with ADREF. As the rotor is rotated clockwise the signal should decrease in amplitude in phase with ADREF. 13Connect channel one of a scope to P7, pin 6 (NORTHMARK). Sync on this pulse. Slowly rock the rotor around the level position. Find the NORTHMARK pulse that is closest to the level point of the tube shelf. 14When you have found the closest NORTHMARK, set the brake on the drive motor. 15Adjust the flag on the stator to be in the middle of the zero interrupter board mounted on the rotor. Make sure that the flag doesn’t hit the zero interrupter at any point. Make sure there will be clearance when the rotor moves at high speeds. 16Connect channel 1 of the scope probe to P17, pin 5 on the GHost board. Sync on this signal. Verify an INDEX pulse is present only as the zero gate passes the flag on the stator. 17Connect channel 1 of the scope to P17, pin 3 (AP0). Connect channel 2 of the scope to P17, pin4 (AP90). Sync on channel 1. 18Rotate the rotor clockwise while observing the waveforms. AP90 should lead AP0 by 90 degrees as the rotor is rotated clockwise

Main Drive Commissioning Procedure

CAUTION

BEFORE PROCEEDING, THE ROTATING SCAN FRAME MUST BE PINNED IN ONE OF THE TWO LOCKING LOCATIONS BEFORE THE MAIN DRIVE BELT IS REMOVED. THE MAIN DRIVE BELT MUST BE REMOVED FROM THE MOTOR UNTIL THE CORRECT DIRECTION OF ROTATION (CLOCKWISE) CAN BE VERIFIED. IF THE SCAN FRAME IS ROTATED IN THE WRONG DIRECTION (COUNTERCLOCKWISE) DAMAGE TO THE SLIP RING BRUSHES WILL OCCUR. 1 Turn the gantry power off at the wall box. Verify that the Main Drives paddle switch located on the AC Control chassis is in the ”1” (ON) position and the key switch is in service mode. 2 On the GHOST PCB, remove the cable to J28 and short the two pins together at the end of the cable. Remove the jumper located at P26 (Accessories). 3 Put a jumper from Pin 1 of P26 (Accessories) to Pin 1 of P23 (Patient Support Override) to complete the ESTOP

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Main Drive Commissioning Procedure

loop. 4 For MDP & TDP Systems: Close the Main Drive fuse block (F357, F358 & F359). Connect the cable and adapter from the MDP PCB P11 to the PC serial port as shown in Figure 64. For GMP Equip Systems: Close the Main Drive fuse block (F357, F358 & F359). Connect the cable from the GMP board P36 to the PC serial port as shown in Figure 64.

SemiPower Ca - 1 Comm cable kit connected to serial port on the PC

PC

Spindleblok

Figure 64: Connection from PC to Spindleblok

5 Power up the gantry at the wall box. 6 Make sure the cover interlock switch is pulled out and push the yellow ”START” button. You should hear a clunking sound indicating that the main drives contactor (MDK) is energized and the green power LED on the SpindleBlok should now be on. 7 With the DMM set to the 750 VAC scale, carefully check the voltage between all combinations of L1,L2, and L3 at the front of the SpindleBlok. Each measurement should be approximately 230 VAC. Each leg should also measure approximately 132 VAC to ground. If any voltage isn’t correct, do not proceed until every combination measures the proper voltage. 8 Before the motor controller can be initialized or ”commissioned”, it is first necessary to install the SpindleBlok control

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Main Drive Commissioning Procedure

and communication software on a local PC. The software ”SSI_POD2P” can be found at: C:\questor\mx8000Dual\Files\Service\Options\Motor\SemiPower folder on your PC. NOTE

If this step has already been completed, go to the next step. If not, install the software per the following procedure and connect the PC to the SpindleBlok as shown in Figure 65.

Connect the PC to the Spindleblok

Figure 65:

9 For ease of use, create two separate Windows desktop shortcuts on the local PC for executable files SbConfig.exe and SSI_POD2P.exe contained in the SB040a subdirectory. 10Run the SSI_POD2P.exe from the desktop. This will launch the SSI IDM Emulator that will then be used to commission the motor drive. Verify that there is a ”Set All” button present on the main SSI display. If there is no ”Set Philips Medical Systems Confidential and Proprietary Information

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Main Drive Commissioning Procedure

All” button present, press ^D, close the program and then reopen it a second time. The ”Set All” button should now be present. It is also necessary to verify which Comm port you will be using on the local PC to communicate with the controller. From the pulldown menu select: Utils | Comm Setup | 9600 Baud and verify that Comm Port 1 is selected (assuming that is the port you are using). Click on OK to close the window and continue. 11 From the pulldown menu selections on the main SSI display, select: Utils à IDM Version à 040A. Next, from the pulldown menu select: File à Open User List à SGL_SB_040A_04302002.def and then open the file. This will now display a table of all the motor drive parameters, their abbreviation codes and the current parameter values. 12From the main SSI display click the ”Set All” button and answer YES to Download All Parameters? The following results should be displayed: Write Attempts

79

Successful Writes

79

Write to Read-Only Errors 0 Other Errors

0

13Close the SSI IDM Emulator window and launch the SbConfig.exe from the desktop. This will launch the SpindleBlok Configuration Tool program. From the pull down menu selections, select: Util à Comm Setup and verify that the 9600 baud rate and the same comm port are selected as in the SSI IDM Emulator configuration. 14From the pull down menu selections in the Configuration Tool bar, select: Utils à IDM Version à 040A. From the main display, click the ”I/ O Init” button. Next, from the pull down menu select: File à All Parameters and then click the ”Get All” button. If successful, an ”Upload Completed” will be displayed in the Last Message dialogue box. From the pull down menu selections in the Configuration Tool bar, select: Drive Mode, and verify that the radio button for ”Extended Commission ¤ Disabled” is selected. Click on ”OK” to close the window and continue. A ”Mode Set Successfully” will be displayed in the Last Message dialogue box. 15Again from the Configuration Tool window, select: Utils à Motor Setup. At this point, a Motor Setup subwindow should be displayed with the following data: Horsepower 2.00 Voltage 230 Rated Current 8.00 Rated Speed 1744 Rated Frequency 60 16If this data is correct, press the ”Commission Drive” button on the Motor Setup subwindow. There will be a brief pause and then the amber ”Communication” status LED on the SpindleBlok will light as the drive parameters are downloaded. An information box should pop up with the message ”Commissioning Drive”. If the download is successful, the green ”On Line” status LED will come back on after a few moments and a ”Mode Set Successfully” Philips Medical Systems Confidential and Proprietary Information

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Main Drive Commissioning Procedure

will be displayed in the Last Message dialogue box. Press the ”Close” button to exit this window. 17From the pulldown menu selection in the Configuration Tool window, select: Drive Mode and enable the ”Extended Commission Enabled” radio button. Also verify that the ”Forward Direction Enable” and ”Reverse Direction Disable” radio buttons are selected. Press the ”OK” button to close this window. Next, from the Configuration Tool window, select: Utils ! Motor Setup. Once again the Motor Setup subwindow will be displayed. Press the ”Commission Drive” button on the Motor Setup subwindow. Standing at the rear of the gantry and looking at the motor shaft, the proper rotation of the drive sheave should be counterclockwise to ensure clockwise rotation of the gantry. This process takes approximately 1 minute and during this time the Info box should display ”Commissioning Drive”. When finished, close the motor setup subwindow. 18To complete the verification of the drive system, disable drives by placing the Main Drive paddle switch in the OFF ”O” position. Replace the main drive belt ensuring that the belt is aligned to the outer-most groove of the rotor casting (toward the rear of the gantry); the belt must also be in the same outer-most groove of the motor drive sheave. Verify that the DMS cover has been reinstalled. With the locking pin removed, rotate the rotor clockwise by hand 4 or 5 times to seat the belt and ensure it is centered on the belt tensioner wheel. Also verify that all cables and components are secure, the rotor is in balance and that nothing is in contact with the stator. 19Re-enable drives by placing the Main Drive paddle switch in the ON ”|” position. Press ”IO Init”. If successful, an ”IO Init Successful” will be displayed in the Last Message dialogue box. From the SpindleBlok Configuration tool window, command the drive to run at a 15 RPM speed by entering the value 225 on the CO2 command line (omega_cmd_save) and then press ”SET”. If successful, the text ”Write Successful” will be displayed in the Last Message dialogue box. The CO2 drive parameter is equal to the RPM of the motor shaft (see Appendix). Press the ”START” button and run the gantry at 15 RPM for 3 to 4 minutes while listening for any unusual noises or observing any vibrations.

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Appendix

Appendix Different drive speeds are obtained by modifying the CO2 command line (omega_cmd_save) parameter in the SSI IDM Emulator window. The CO2 drive parameter is equal to the RPM of the motor shaft. Since one revolution of the scan frame is obtained by 15 revolutions of the motor shaft, multiply the desired scan frame RPM by 15 or use the following table to find the correct parameter to enter (NOTE: The values in this table are not valid for use in CAN SENDER!): NOTE

Do Not Exceed 120rpm Frame Speed At Any Time! Table 12:

Desired Scan Frame R.P.M.

Time Per 1 Revolution

CO2 (omega_cmd_save) Parameter

15

4.0 sec.

225

30

2.0 sec.

450

60

1.0 sec.

900

80

0.75 sec.

1200

120

0.5 sec.

1800

20The Main Drive commissioning is completed. 21While the gantry is rotating observe the Rotate Counter. Count the revolutions between counter increments. This will verify that the revolution counter is correctly counting once every 10 revolutions. 22Halt the gantry by pressing â&#x20AC;?STOPâ&#x20AC;?. 23 Close out of the SbConfig.exe application.

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Tilt Calibration

Appendix J: Tilt Calibration This tool is used to Calibrate the Tilt Pot1 and Pot2. The calibration is performed by: 1 Putting the Gantry in Tilt Calibration mode (either before or after Estop is closed). 2 Closing the Estop if not already closed. 3 Tilting the Gantry to 0°, 30°, 20°, '10°, -30°, 20°, -10° degrees, and for each position, sending the appropriate calibration command. 4 Exiting Tilt Calibration mode. A series of informational messages will appear during the calibration and they shall guide the user through the procedure. To begin, click on the button labeled Begin. Clicking Start will send a command to the Tilt that puts it in Calibration mode. Note that after that, the Tilt display on the Gantry Control Panels and CT Box shall be the actual reading of Pot1/Pot2. The Couch should be at a height between 1500 and 3500 so that the Gantry does not collide with the couch when Tilting at +/- 30° degrees.

Tilt Position and Pot1/Pot2 Display When in normal mode, the tilt angle is displayed. In calibration mode, Pot1 or Pot2 values are displayed. To change the display from Pot1 to Pot2 (or Pot2 to Pot1), just click on the corresponding button before the display status.

Estop Status When in Calibration mode, this program shall check the Estop status from the Gantry. If the Estop is already closed, the calibration shall continue. Otherwise, this program shall send the necessary commands to put the Gantry in a pre estop state, then asks the user to turn the Key switch for the Estop to Close. There are some cases where the Gantry is in a bad state and it needs to be fixed before proceeding with this calibration. Philips Medical Systems Confidential and Proprietary Information

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Tilt Calibration

Calibration The first angle to calibrate is 0° degree. The user is asked to tilt the Gantry to 0° degree (using a protractor or another accurate device) then, making sure that Pot1 and Pot2 are around 512, click on a button. If Pot1 or Pot2 are OFF 512, adjust them using a screw driver..... Once Pot1/Pot2 are adjusted to display 512 when tilt is at 0° degree, there shall be no further need to adjust them Afterwards, the angle to calibrate is +30 degrees. The user is asked to tilt the Gantry to +30° degrees (using a protractor or another accurate device) then click on a button. The Tilt shall internally calibrate the values for +20° degrees and +10° degrees. But it is a better to repeat the operation for these 2 angles. Same thing for -30°, -20°, and -10° degrees.

Abort At any time during the calibration, the user may click "Abort Test" to terminate the operation. This shall take the Tilt out of calibration mode. It is recommended to reCalibrate from the start after an abort was issued.

Placing the Protractor Open the front cover and remove the front cone. Close the front cover and secure. Put a protractor on a good steel surface like part of the tube cradle.

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Tilt Calibration

Pot1/Pot2 Adjustment 1 Loosen the set screw on the silver collar of the pot. Using a small screwdriver, turn Pot1 to a value of 512 +/- 5. Repeat this for Pot2. (The reading of Pot2 is achieved by Pressing the 'Push to display Pot2 value' button. Return to Pot1 by pressing the 'Push to display Pot1 value' button. The reading for Pot2 is Negative, the reading for Pot1 is positive). 2 Tighten the allen screws on the pot collars.

Figure 1-1: Jog Buttons on Tilt Board / Pot1 and Pot2

Pot Values for Different Angles One of the reasons the Tilt might not acknowledge the calibration command is when the Pot value is out of the limits defined in the software. Here are these limits. If you encounter this problem, try to readjust the 0 degree calibration around 512. If, the problem persists, then it is most probably the Pot(s) is (are) bad. Table 1-1:

Degree

Pot Middle Value

Pot Min Value (Middle - 60)

Pot Max Value (Middle + 60)

+30

887

827

947

+20

762

702

822

+10

637

577

697

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Tilt Calibration

Table 1-1:

Degree

Pot Middle Value

Pot Min Value (Middle - 60)

Pot Max Value (Middle + 60)

0

512

452

572

-10

387

327

447

-20

262

202

322

-30

137

77

197

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Pentra