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SPI REVIEW QUESTIONS: Doppler Questions and Answers (100% Pass)

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According to the Bernoulli Principle, where will you find the lowest pressure in a vessel with stenosis? A. proximal to the stenosis B. distal to the stenosis C. in the collateral vessels D. at the site of stenosis D. at the site of stenosis Which of the following is a system adjustment t...

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  • November 18, 2024
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1|Page | © copyright Master01| Grade A+




SPI REVIEW QUESTIONS: Doppler
Questions and Answers (100% Pass)
According to the Bernoulli Principle, where will you find the lowest pressure in

a vessel with stenosis?




A. proximal to the stenosis


B. distal to the stenosis


C. in the collateral vessels


D. at the site of stenosis


✓ D. at the site of stenosis




Which of the following is a system adjustment that is made when changing

from a lower extremity arterial exam to a lower extremity venous exam on

the same patient?




A. reverse the color display baseline


B. decrease transducer frequency


C. decrease Doppler scale


D. change the cursor angle to 0 degrees


Master01 |Excellent Study Material| Latest update

, 1|Page | © copyright Master01| Grade A+

✓ C. decrease doppler scale




The primary advantage of continuous wave Doppler is:




A. Image depth


B. Range discrimination


C. Absence of the Nyquist limit


D. Reduced aliasing


✓ C. Absence of the nyquist limit




Blood is flowing toward a 7MHz transducer; you expect the reflected

frequency to be _______ 7MHz.




A. greater than


B. less than


C. constant at


D. one half of


✓ A. greater than




What is the average Nyquist limit for a 5MHz CW Doppler probe?

Master01 |Excellent Study Material| Latest update

, 1|Page | © copyright Master01| Grade A+




A. 15kHz


B. 10kHz


C. 7kHz


D. None of the above


✓ D. none of the above



✓ -continous wave doppler is not limited by PRF or the nyquist limit.




The best angle of insonation to produce the most accurate Doppler shift

information is_________degrees.




A. 0


B. 45


C. 60


D. 90


✓ A. 0




Which of the following parameters is displayed on the y-axis on a Doppler

tracing?

Master01 |Excellent Study Material| Latest update

, 1|Page | © copyright Master01| Grade A+




A. speed


B. time


C. frequency shift


D. motion


✓ C. frequency shift




The term __________________ refers to when all layers of blood flow are moving

at relatively the same speed.




A. Laminar flow


B. Reynolds flow


C. Eddy currents


D. Plug flow


✓ D. Plug flow




What is laminar flow?


✓ blood flow layers moving at slightly different speeds with the highest

velocity in the center




Master01 |Excellent Study Material| Latest update

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