A member asked:

How can a dopplar test and mra on a carotid artery show different results dopplar-no blockage mra-severe stenosis happened to my husband now cta next?

3 doctors weighed in across 2 answers
Dr. Shoaib Shafique answered

Specializes in Vascular Surgery

Doppler: Is technician dependent and mra can sometime overestimate the degree of stenosis. Cta is the test of choice for carotids. Angiogram remains the gold standard but not commonly done any more since it is more invasive and does carry a small risk of stroke.

Answered 9/28/2016


Dr. Michael Korona answered

Specializes in Radiology - Interventional

MRI: Can show false positive results due to turbulence of blood flow in the carotid arteries. Cta is a good test for carotid arteries.

Answered 11/4/2015



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