Medical Physics for Sonographers Final Exam Questions
Course Introduction
Medical Physics for Sonographers provides an in-depth exploration of the fundamental physical principles that underpin diagnostic medical ultrasonography. The course covers essential topics such as the nature and propagation of ultrasound waves, acoustic impedance, reflection, refraction, attenuation, and the interaction of sound with human tissues. Additionally, it examines image formation, Doppler principles, artifact recognition, and quality assurance in ultrasound imaging. Emphasizing both theory and practical application, the course aims to equip sonographers with a thorough understanding of the technical, safety, and biological considerations necessary for the optimal use of ultrasound in clinical practice.
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) Color Doppler imaging is superimposed on a gray-scale image.
A)True
B)False
Answer: True
Q2) A gray-scale ultrasound image is the visible counterpart of a/an ________.
A) frequency shift
B) spectral display
C) invisible object
D) electronic wave
Answer: C
Q3) Vertical parallel scan lines are seen with which transducer format?
A) vector.
B) convex.
C) linear.
D) curvilinear.
Answer: C
Q4) The Doppler effect is caused by a difference in the depth of two moving objects.
A)True
B)False
Answer: False
Page 3
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Chapter 2: Ultrasound
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108 Verified Questions
108 Flashcards
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Sample Questions
Q1) Attenuation increases with an increase in wavelength.
A)True
B)False
Answer: False
Q2) What does 3 dB of attenuation mean?
A) One half the original intensity.
B) One third the original intensity.
C) Three decibels more than the original intensity.
D) Increasing amplitude.
Answer: A
Q3) The liquid suspensions that have been developed can be injected into the circulation intravenously to increase ________.
A) wavelength
B) propagation speed
C) impedance
D) echogenicity
Answer: D
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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) Multi-Hertz transducers are driven at only one selectable frequency.
A)True
B)False
Answer: False
Q2) Utilizing multiple focal zones simultaneously increases image detail resolution and degrades ________.
A) contrast resolution
B) temporal resolution
C) sectional thickness
D) harmonic frequencies
Answer: B
Q3) In a curved array,the pulses travel ________.
A) out in different directions
B) in straight lines
C) faster in the center of the beam
D) from an apex
Answer: A
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Page 5
Chapter 4: Instruments
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85 Verified Questions
85 Flashcards
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Sample Questions
Q1) Filtering of the sound beam is used to eliminate ________.
A) side lobe artifacts
B) secondary frequencies
C) the fundamental frequency
D) frequencies outside of the bandwidth
Q2) Three-dimensional presentation is a function of the signal processor.
A)True
B)False
Q3) The display form that presents the depth in the vertical axis and the amplitude of the echo in the horizontal axis is ________.
A) A (amplitude)-mode
B) B (brightness)-mode
C) C (color)-mode
D) M (motion)-mode
Q4) Storage of the last several frames acquired before freezing is called ________.
A) freeze
B) triplex
C) cine loop
D) picture archiving
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Chapter 5: Doppler Principles
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Sample Questions
Q1) The difference between the emitted frequency and the echo frequency returning from a moving scatterer is called ________.
A) Doppler effect
B) Doppler shift
C) continuity rule
D) Bernoulli effect
Q2) The Doppler shift is proportional to the blood flow speed.
A)True
B)False
Q3) What is the driving force behind blood flow?
A) Heart.
B) Gravity.
C) Pressure.
D) Flow rate.
Q4) If viscosity increases,flow rate increases.
A)True
B)False
Q5) In a stenosis,flow speed increases and pressure decreases.
A)True
B)False
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Chapter 6: Artifacts
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80 Verified Questions
80 Flashcards
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Sample Questions
Q1) There must be ________ samples per cycle of Doppler shift to correctly obtain an image.
A) two
B) three
C) four
D) five
Q2) Speckle artifact is most likely caused by ________.
A) refraction
B) interference
C) pulse width
D) multiple reflections
Q3) Propagation speed error displaces structures ________.
A) axially
B) medially
C) laterally
D) anteriorly
Q4) Grating lobes are essential for the proper operation of a linear phased array transducer.
A)True
B)False
Page 8
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Chapter 7: Performance and Safety
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Sample Questions
Q1) Plant studies are useful primarily for ________.
A) identifying focal lesion production
B) understanding cavitational effects in living tissue
C) determining conditions under which thermal effects occur
D) determining conditions under which nonthermal effects occur
Q2) Doppler test objects and flow phantoms are not able to evaluate gate location.
A)True
B)False
Q3) Biological effects have not occurred at temperatures lower than ________.
A) 39 °C
B) 42 °C
C) 39 °F
D) 42 °F
Q4) 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
Page 9
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