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Figure 2 (a) A 59-year-old patient with known single-vessel disease and prior right coronary artery-percutaneous transluminal coronary angioplasty. The entire coronary tree is well visualized in this volume-rendering image. (b) Same image with different window thresholds shows severe calcifications (Agatston score 970) impeded correct diagnosis. (c) Enlargement of (b) shows severe calcium deposits in the left main, left circumflex, and left anterior descending arteries.
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