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Coronary Calcification Compared in Patients with Acute versus in Those with Chronic Coronary Events by Using Dual-Sector Spiral CT¹

¹ From the Cardiac Rehabilitation Institute (J.S., M.M.) and Department of Diagnostic Imaging (S.A., Y.I.), Chaim Sheba Medical Center, Sackler Faculty of Medicine, Tel-Hashomer, 52621, Israel. From the 2001 RSNA scientific assembly. Received November 27, 2001; revision requested January 4, 2002; final revision received June 7; accepted July 3. Address correspondence to J.S. (e-mail: dshemesh@netvision.net.il).

View larger version (32K): [in a new window]   Figure 1. Bar graphs show characteristics of calcium in patients with acute and in those with chronic events. As compared with findings in the acute group, a sharp difference, with a significantly greater number of lesions per patient, greater total calcium area, and higher total calcium score, is clearly seen in the chronic group. Q = quartile.

View larger version (123K): [in a new window]   Figure 2. Transverse CT scan shows diffuse calcification of the left anterior descending coronary artery (LAD) in a 69-year-old patient who had hypertension and positive thallium stress test results that led to coronary angiography. Triple-vessel obstruction was found, and the patient underwent coronary bypass surgery. The CAC score in the left anterior descending coronary artery was 710, and the total calcium score was 2,115.

View larger version (118K): [in a new window]   Figure 3. Transverse CT scan shows a mildly calcific lesion in the left anterior descending coronary artery (LAD) in a 59-year-old patient who had hypertension and hypercholesterolemia and who sustained acute myocardial infarction. To enable identification of the minimally calcific lesion within the region of interest (a), automatic highlighting of the calcification was used, which colored the calcification gray. This patient’s TCS was 27.