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Noninvasive detection of coronary artery stenosis by multislice helical computed tomography.

Noninvasive detection of coronary artery stenosis with noninvasive imaging modalities (electron beam CT, MR angiography) has recently emerged. The use of helical CT in the visualization of epicardial coronary arteries is limited by cardiac motion artifacts due to long acquisition times and lack of an ECG trigger and is therefore reliable only in the determination of coronary graft patency. With the introduction of a novel CT technology using a 4-slice CT system with shorter acquisition times and retrospectively ECG-gated helical scanning (Somatom Plus4VZ, …