Fig. 1From: Ultrasound halo count in the differential diagnosis of atherosclerosis and large vessel giant cell arteritisIMT measurement: intima-media thickness (IMT) is measured as the distance between lumen-intima (white arrow) and media-adventitia (red arrow) interfaces. Examples are shown in yellow arrows. In this case, we see an example of mid- to hyperechoic long segmental thickening of the intima-media displaying several visible lines with loss of the typical double line pattern in a longitudinal scan of the left subclavian artery, corresponding to the increased IMT with chronic changesBack to article page