The Society of Atherosclerosis Imaging and Prevention recently developed appropriate use criteria for carotid IMT. What is the procedure? Why is it used? Why is it controversial? Which patients are candidates? Dr. Edward Gill, professor of medicine in the division of cardiology in the department of medicine at the University of Washington and clinical professor of diagnostic ultrasound at Seattle University, talks with host Dr. Alan Brown about the details of the procedure and how to locate a center for the test.