SPI Practice Exam 2025 With Correct Answers

SPI Practice Exam 2025 With Correct
Answers




Which term describes blood flow changes in response to respiration?
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A. Phasic
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B. Parabolic
d




C. Spontaneous
d




D. Pulsatile - correct answer Phasic
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What is demonstrated in this image produced by a linear array to placed on a uniform tissue-mimicking
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phantom?



A. Time gain compensation not set properly.
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B. System has low dynamic range.
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C. Transducer crystals are damaged.
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D. Focus control is malfunctioning. - correct answer Transducer crystals are damaged
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What is dynamic aperture?
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,A. Aperture that varies with transmit frequency
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B. Aperture that deceases as a function of time
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C. Aperture that increases with increasing focal length
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D. Aperture that changes as a function of frame rate - correct answer Aperture that increases with increasing
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focal length d




Which variable can cause an acoustic shadow artifact?
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A. Small acoustic impedance mismatch
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B. Refraction
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C. Perpendicular incidence
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D. Low attenuation - correct answer Small acoustic impedance mismatch
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What control improved the effects of attenuation?
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A. Dynamic range
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B. Pulse Inversion
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C. Multiple focal zones
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D. TGC - correct answer TGC
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What is the potential effect of increasing the PRF?
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A. Depth ambiguity
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B. Decreased frame rate
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C. Poor spatial resolution
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D. Decreased penetration - correct answer Decreased penetration
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How is lateral resolution determined for a pulse-echo system using a tissue-mimicking test object?
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, A. By observing spaces between reflectors perpendicular to the beam
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B. By observing spaces between reflectors along the beam path
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C. By observing position of deepest visible reflector along the beam path
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D. By observing position of deepest visible reflector perpendicular to the beam path - correct answer By
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observing spaces between reflectors perpendicular to the beam
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According to ALARA guidelines, which parameter should be minimized?
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A. Transmit power
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B. Frequency
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C. TGC
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D. Overall gain - correct answer Transmit power
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Which statement is most acurate regarding surface rendering 3D ultrasound imaging?
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A. Improves accuracy of volume measurement
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B. Minimizes effect of attenuation artifacts
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C. Spatial resolution improve when using high resolution mesh
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D. Feature-based reconstruction store full 3D volume acquired - correct answer Minimizes effect of
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attenuation artifacts d




Which artifact is indicated by the arrows in this image?
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A. Shadow produced by the diaphragm
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B. Acoustic enhancement
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C. Comet tail
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D. Mirror image - correct answer Comet tail
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