Which One of the Following Imaging Characteristics Indicates a Significant

question 22

Multiple Choice

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

• A) Spectral broadening
• B) Increase of peak-systolic velocity of greater than 20% when compared with the proximal adjacent area
• C) Increase of peak-systolic velocity of greater than 100% when compared with the proximal adjacent area
• D) Loss of blood flow reversal in early diastole

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