Two images of an individual with plaque.

In the upper panel, the part of the common carotid artery (CCA) that is used for measurement of the intima-media thickness (IMT) is shown in red, while the part that was used for measurement of IMT in the bulb is shown in yellow. This measurement is performed in a semi-automated fashion. In the lower panel, a region of interest (ROI) in red is placed both around the plaque part being visualized in the far wall and in the part seen in the near wall. This was done by hand.