Stent sizing by coronary computed tomographic angiography: comparison with conventional coronary angiography in an experienced setting.

Objectives: The goal was to compare stent sizing by coronary computed tomographic angiography (CCTA) with that deployed in an experienced setting based upon conventional coronary angiography (CA).

Background: Stent sizing is currently performed by visual estimation, with infrequent guidance by intravascular ultrasound. CCTA permits quantitative determination of stent length (Stent L) and diameter (Stent D).

Relation between coronary calcium and 10-year risk scores in primary prevention patients.

In 380 patients, coronary calcifications were quantified by electron beam tomography and compared with the predicted 10-year cardiovascular event risk determined by the Framingham equation, Adult Treatment Panel III tables, and the PROCAM algorithm. The correlation between the amount of calcium and the predicted cardiac event risk was low (correlation coefficient range 0.19 to 0.