What type of doppler is typically used for extremity evaluation?
What type of doppler signal processing uses spectral analysis?
What type of doppler signal processing uses a zero-crossing frequency detector?
Can doppler discriminate normal flow from mild disease or stenosis from occlusion?
If a room is cold it can cause vaso_______.
normal flow or abnormal flowRapid systolic upstroke
normal flow or abnormal flowNo systolic flow reversal
normal flow or abnormal flowSlowed mid systolic downstroke
normal flow or abnormal flowLate systolic flow reversal
normal flow or abnormal flowSharp peak
normal flow or abnormal flowRounded peak
normal flow or abnormal flowRapid mid systolic downstroke
normal flow or abnormal flowForward diastolic flow
normal flow or abnormal flowDelayed systolic upstroke
True or false: Biphasic flow is never considered normal.
Does biphasic flow have forward diastolic flow?
After exercise, is it normal if there is a loss of the systolic flow reversal?
After exercise, it is normal if the waveforms upstroke is slow?
After exercise, it is normal if the waveform has a rounded peak?
After exercise, it is normal if there is more diastolic forward flow?
Analog doppler is NOT sensitive to velocities less than ___ cm/s.
How do you find pulsitility index?
p1-p2/ mean frequency
A normal pulsitility index = > ____.
A pulsitility index less than 4.0 is consistent with > ___% stenosis proximal to the sample.
Normal systolic acceleration time = < ____ milliseconds.
Abnormal systolic acceleration time = > ____ milliseconds.
A systolic acceleration time greater than 133 milliseconds suggests an obstruction proximal/distal to the segment.