Plaque : In carotid arteries. Relative risk of stroke. Need for aspirin. See stroke.Org.
Answered 5/22/2016
5.8k views
Percent blockage : Usually will estimate percentage of blockage in the artery. Sometimes can identify clots , complete blockage or dissection.
Answered 9/23/2016
5.7k views
Why ask here?: A web search will get you much more information than a HealthTap doc could possibly ever fit into 400 characters and takes about 10 seconds. Start with http://www.hopkinsmedicine.org/healthlibrary/test_procedures/cardiovascular/carotid_artery_duplex_scan_92,P07661.
Answered 5/21/2016
3.6k views
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