Exam (elaborations)
SPI Mock Registry Exam B20 2023
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SPI Mock Registry Exam B20 2023
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SPI Mock Registry Exam B20 2023If the amplitude of the ultrasound wave decreases by 1/2 with a constant beam area, what happens to
the intensity of the beam? - ANSWER-Decreases by 25% of the original value
Which of the following transducers would have the best axial resolution?
4mm element diameter
2mm element diameter
4 SPL
2 SPL - ANSWER-2mm SPL
As the cosine of the cursor angle increases: - ANSWER-The calculated velocity decreases
What setting should be increased when evaluating venous flow on Doppler? - ANSWER-Color Priority
The artifact that is produced when the incident beam hits a curved surface and produces an acoustic
shadow is referred to as: - ANSWER-defocusing (Edge shadowing)
What two factors determine the focal depth of a transducer? - ANSWER-element diameter and
frequency
Color Doppler is evaluated with what type of phantom - ANSWER-Fluid filled-phantom
What is the average Nyquist Limit for a 5MHz CW Doppler? - ANSWER-None of the above; CW is not limit
by the PRF and Nyquist limit
___________ uses the amplitude of the Doppler shift and the intensity of the red blood cells to be able
to generate color on the image independent of the angle of isonation. - ANSWER-Power Doppler
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