What is the primary imaging finding indicating atherosclerosis in angiography?

• A. Presence of calcifications
• B. Narrowing of the arterial lumen
• C. Abnormal blood flow patterns
• D. Extravasation of contrast material

Answer: (B)

In angiography, the primary imaging finding that indicates atherosclerosis is the narrowing of the arterial lumen. Atherosclerosis is characterized by the buildup of plaques within the arterial walls, consisting of lipids, inflammatory cells, and calcium deposits. As these plaques develop, they can protrude into the lumen of the artery, reducing the space available for blood flow, which is observed as lumen narrowing on angiographic images.

This narrowing can lead to significant clinical problems, including ischemia and infarction, as it restricts the blood supply to tissues. While the presence of calcifications, abnormal blood flow patterns, and extravasation of contrast material may also be associated with vascular disease, they are not specific indicators of atherosclerosis itself. Narrowed lumens directly correlate with the severity of atherosclerotic disease and are the most recognized diagnostic criterion in angiography for identifying this condition.