Which of the following is/are true regarding the assessment of renal artery obstruction with duplex scanning?
A. There is no flow reversal in early diastole in the renal artery
B. Renal artery to aortic peak systolic velocity ratios that exceed 3.5 indicates the presence of a 60% diameter stenosis
C. Duplex scanning regularly identifies accessory renal arteries
D. Duplex scanning cannot be recommended as a means for monitoring renal artery reconstruction
Answer:A
Which of the following is/are true regarding the assessment of renal artery obstruction with duplex scanning?
A. There is no flow reversal in early diastole in the renal artery B. Renal artery to aortic peak systolic velocity ratios that exceed 3.5 indicates the presence of a 60% diameter stenosis C. Duplex scanning regularly identifies accessory renal arteries D. Duplex scanning cannot be recommended as a means for monitoring renal artery reconstruction