Coronary artery disease: prediction with in vitro electron beam CT.

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Abstract
PURPOSE: To investigate the potential to predict coronary artery disease with electron beam computed tomography (CT). MATERIALS AND METHODS: Fifty heart specimens were examined with electron beam CT and histomorphometric techniques to measure calcific deposits as a percentage of blockage. RESULTS: In group A specimens (from cadavers of patients with symptomatic coronary artery disease), calcific deposits were identified at electron beam CT in 41% (584 of 1,426) of all segments of coronary arteries; in group B specimens (with asymptomatic coronary artery disease), in 24% (369 of 1,535) of all segments; and in the normal control specimens, in 4% (47 of 1,337) of all segments; segments (group A vs control specimens, P < .0001; group B vs control specimens, P = .02). On the basis of logistic regression analysis, coronary artery disease would be predicted if the average electron beam CT calcium score exceeds 0.32. The sensitivity and specificity of electron beam CT in the detection of calcific deposits per cor...

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