Which one of the following imaging characteristics indicates a significant (greater than 50% diameter reduction) arterial narrowing during lower-extremity arterial imaging?

Question

Quizplus · Accepted Answer

An increase of peak-systolic velocity of greater than 100% when compared with the proximal adjacent area is a criterion used in Doppler ultrasound imaging to indicate significant arterial narrowing, specifically greater than 50% diameter reduction. This criterion is based on the principle that as an artery narrows, the velocity of blood flow through that narrowed segment increases significantly compared to areas proximal to the narrowing.

Which One of the Following Imaging Characteristics Indicates a Significant