Introduction to Diagnostic Imaging Exam
Solutions
Course Introduction
Introduction to Diagnostic Imaging provides students with foundational knowledge of the principles and applications of diagnostic imaging modalities used in healthcare. The course explores the physics, instrumentation, and clinical uses of techniques such as X-ray, computed tomography (CT), magnetic resonance imaging (MRI), ultrasound, and nuclear medicine. Emphasis is placed on understanding image formation, safety considerations, interpretation basics, and the role of diagnostic imaging in patient assessment and management. Through lectures, case studies, and practical examples, students gain a comprehensive overview of how imaging supports clinical decision-making across medical specialties.
Recommended Textbook
Sonography Principles and Instruments 9th Edition by Frederick W. Kremkau PhD
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7 Chapters
473 Verified Questions
473 Flashcards
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Chapter 1: Introduction
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20 Verified Questions
20 Flashcards
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Sample Questions
Q1) Sonography is medical anatomic imaging using a ________ technique.
A) starting point
B) pulse echo
C) vertical parallel
D) transducer instrument
Answer: B
Q2) Three-dimensional imaging requires many adjacent tissue ________ to build the image.
A) moving objects
B) frequency shifts
C) cross-sections
D) ultrasound pulses
Answer: C
Q3) Pulsed ultrasound transducers can generate only ultrasound pulses.
A)True
B)False
Answer: False
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Page 3
Chapter 2: Ultrasound
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108 Verified Questions
108 Flashcards
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Sample Questions
Q1) Pulsed ultrasound consists of ________ separated by ________ of time.
A) frequencies; cycles
B) pulses; cycles
C) pulses; gaps
D) cycles; pulses
Answer: C
Q2) In oblique incidence,the ________ and ________ angles are always equal.
A) transmitted; reflected
B) normal; transmitted
C) incidence; reflection
D) incidence; transmitted
Answer: C
Q3) The attenuation of a 5 MHz transducer in soft tissue would be ________ dB at 2 cm of depth.
A) 20
B) 5
C) 10
D) 1.25
Answer: B
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Page 4
Chapter 3: Transducers
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75 Verified Questions
75 Flashcards
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Sample Questions
Q1) Another name for the Fresnel zone is ________________.
A) near zone
B) far zone
C) field length
D) near path length
Answer: A
Q2) The focal length is the distance between equal beam widths that are some multiple of the minimum value at the focus.
A)True
B)False
Answer: False
Q3) If the propagation speed of the transducer element material is 6 mm/µs,the operating frequency for a thickness of 0.2 mm is ______ MHz.
A) 15
B) 30
C) 12
D) 7.5
Answer: A
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Chapter 4: Instruments
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85 Flashcards
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Sample Questions
Q1) Normally the number of channels does not exceed the number of ________.
A) cycles per second
B) elements in the transducer
C) ultrasound pulses
D) pulse delays
Q2) Human vision is limited to a dynamic range of about 30 dB.
A)True
B)False
Q3) If the number of focal zones is increased,the frame rate decreases.
A)True
B)False
Q4) The ________ determines the brightness of the echoes on the display.
A) analog-to-digital converter
B) digitizer
C) digital-to-analog converter
D) cathode ray tube
Q5) The ultrasound instrument is composed of a beam former,a signal processor,an image processor,and a transducer.
A)True
B)False
Page 6
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Chapter 5: Doppler Principles
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Sample Questions
Q1) What is the driving force behind blood flow?
A) Heart.
B) Gravity.
C) Pressure.
D) Flow rate.
Q2) Poiseuille's equation states that,if the flow rate increases,the ________.
A) tube length has increased
B) tube diameter has increased
C) pressure difference has decreased
D) viscosity of the fluid has increased
Q3) In a stenosis,flow speed increases and pressure decreases.
A)True
B)False
Q4) The normal adult circulatory system contains ________ liters of blood.
A) 3
B) 4
C) 5
D) 6
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Page 7
Chapter 6: Artifacts
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Sample Questions
Q1) Clutter is also known as __________.
A) noise
B) flash
C) speckle
D) cross-talk
Q2) Mirror-image artifact is a form of ________.
A) refraction
B) reverberation
C) speed error
D) grating lobes
Q3) A duplication artifact associated with echoes interacting with a strong reflector is called ________.
A) cross-talk
B) comet tail
C) mirror image
D) partial volume
Q4) High pulse repetition frequencies can result in Doppler range ambiguity artifacts.
A)True
B)False
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Chapter 7: Performance and Safety
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Sample Questions
Q1) No bioeffects have been observed in mammalian tissues that contained well-defined gas bodies at peak rarefactional pressure values (MPa) of less than
A) 0.4
B) 0.2
C) 0.3
D) 0.1
Q2) In soft tissue,a temperature rise is considered significant once it exceeds ________.
A) 2 °C
B) 4 °C
C) 2 °F
D) 4 °F
Q3) Which of the following is not assessed with a tissue-equivalent (TE) phantom?
A) Penetration.
B) Beam width.
C) Dynamic range.
D) TGC operation.
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