Radiologic Science and Imaging Physics
Exam Review
Course Introduction
Radiologic Science and Imaging Physics explores the fundamental principles and advanced concepts used in medical imaging and diagnostic radiology. This course covers the physical and technical bases of various imaging modalities, including X-ray, computed tomography (CT), magnetic resonance imaging (MRI), ultrasound, and nuclear medicine. Topics include the interaction of radiation with matter, image formation and quality, radiation safety, instrumentation, and the underlying physics of each imaging technique. Students will also discuss current trends in radiologic technology, quality assurance, and the role of physics in optimizing diagnostic outcomes and patient care.
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) Pulsed ultrasound transducers can generate only ultrasound pulses.
A)True
B)False
Answer: False
Q2) Doppler ultrasound measures the movement of ________.
A) tissue
B) blood
C) A and B
D) none of the above
Answer: C
Q3) The method by which each pulse originates from the same starting point is called a ________ image.
A) sector
B) linear
C) convex
D) none of the above
Answer: A
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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) ________ are the even and odd multiples of the fundamental frequency.
A) Bandwidths
B) Harmonics
C) Mechanical waves
D) Side lobes
Answer: B
Q2) Doppler ultrasound pulses are typically ________ cycles long.
A) 2-3
B) 12-30
C) 5-20
D) 5-30
Answer: D
Q3) What is the spatial pulse length in soft tissue for a four-cycle pulse,using a frequency of 5.0 MHz?
A) 0.6 mm
B) 6.0 mm
C) 0.9 mm
D) 9.0 mm
Answer: C
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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) The distance from the transducer to the center of the focal region is called the
A) focus
B) path length
C) focal length
D) focal zone length
Answer: C
Q2) Electric _______ applied to a transducer are converted to ultrasound.
A) pulses
B) waves
C) echoes
D) voltages
Answer: D
Q3) Partial-volume artifact is also called ____________.
A) section thickness artifact
B) side lobe artifact
C) refraction artifact
D) grating lobe artifact
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) How many bits does it take to make a byte?
A) 4
B) 8
C) 10
D) 15
Q2) If the depth of penetration is increased,the pulse repetition frequency (PRF) must be increased.
A)True
B)False
Q3) Gain is the ratio of _____________________.
A) amplifier input to output voltage power
B) amplifier output to input electric power
C) voltage ratio squared or voltage ratio to the second power
D) transmission output to amplifier input
Q4) Parallel processing is a process technique that increases:
A) detail resolution.
B) frame rates.
C) penetration depth.
D) contrast resolution.
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Chapter 5: Doppler Principles
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75 Verified Questions
75 Flashcards
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Sample Questions
Q1) In a stenosis,flow speed increases and pressure decreases.
A)True
B)False
Q2) Blood flows from the left and right ventricles into the aorta and pulmonary artery,respectively.
A)True
B)False
Q3) Determining the direction of the Doppler shift voltages is accomplished by the ________.
A) autocorrelation
B) spectrum analyzer
C) fast Fourier transform
D) phase quadrature detector
Q4) The horizontal presentation in the spectral display represents ________.
A) time
B) velocity
C) imaging depth
D) acceleration time
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Chapter 6: Artifacts
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80 Verified Questions
80 Flashcards
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Sample Questions
Q1) Multiple sample gates will appear ________.
A) to manage range ambiguity
B) when utilizing power Doppler
C) when multiple focal zones are used
D) with a low pulse repetition frequency
Q2) The comet-tail artifact is a case of ________.
A) refraction
B) resolution
C) attenuation
D) reverberation
Q3) Range ambiguity produces which error in anatomic imaging?
A) Range too long.
B) Range too short.
C) Doppler shift too low.
D) Doppler shift too high.
Q4) Mirror image artifact is not a factor in color Doppler imaging.
A)True
B)False
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Chapter 7: Performance and Safety
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30 Verified Questions
30 Flashcards
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Sample Questions
Q1) Which of the following pulsed-wave techniques demonstrates the lowest sonographic output?
A) M (motion)-mode.
B) Gray-scale.
C) Color Doppler.
D) Spectral Doppler.
Q2) Ultrasound produces a temperature increase as it propagates through tissues.
A)True
B)False
Q3) The spatial peak temporal peak (SPTP) intensity is used in the American Institute of Ultrasound in Medicine (AIUM) statement on mammalian bioeffects.
A)True
B)False
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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