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final phys exam
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What can be said about the ensemble length of pulsed-wave Doppler?
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It is about 10 to 20 pulses per scan line
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Terms in this set (110)
What can be said about the ensemble length of pulsed-wave Doppler?
It is about 10 to 20 pulses per scan line
What happens if blood flow is sampled in the center of laminar flow?
There will be a higher velocity than if sampled toward the edges
Which of the following is false about color Doppler imaging?
a. It is prone to aliasing
b. It obtains mean velocity information
c. It uses autocorrelation as its signal processing technique
d. It can measure peak systolic and end diastolic velocities
d. It can measure peak systolic and end diastolic velocities
Which of the following is a property of power Doppler?
a. Able to obtain velocity information and direction of flow
b. Signal is obtained by detecting amplitude of shift
c. It is prone to aliasing
d. Limited by perpendicular angle of incidence
b. Signal is obtained by detecting amplitude of shift
Assuming flow is constant, what happens in a region of blood vessel narrowing?
There is an increase in the velocity along with a corresponding decrease in pressure
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