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FIGURE 4. Stable angina and multiple cardiovascular risk factors in 66-y-old man. Images show detection of significant stenosis of middle segment of left anterior descending coronary artery (LAD) by MDCT and confirmation by coronary angiography. (A) Invasive selective coronary angiography demonstrates mild luminal narrowing in proximal LAD (arrow) and eccentric hemodynamically significant stenosis of middle LAD with residual filiform lumen (arrowhead). (B) Thin-slab MIP image across LAD plane shows large noncalcified plaque causing moderate (0%–30%) luminal obstruction in proximal LAD segment. Complex mixed coronary atherosclerotic plaque in middle LAD segment consists of both calcified plaque and noncalcified plaque, causing highly significant luminal narrowing. (C) 3-Dimensional volume-rendered CT image.
