, Volume 26, Issue 1, pp 109-110
Date: 18 Nov 2009

Prospective helical acquisition for coronary CT angiography

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Noninvasive detection of coronary artery disease (CAD) using computed tomography (CT) with multiple detector rows has high sensitivity and negative predictive value [1, 2] and is thus considered an appropriate clinical option to reliably rule out CAD in patients with low-to-intermediate pretest likelihood of disease [3]. However, the reported effective doses of coronary CT angiography using retrospective ECG gating are rather high, ranging from about 15 to 20 mSv [4, 5]. Prospective ECG gating with acquisition of axial datasets (also called “step-and-shoot”) is an established CT scanning technique that has been used for a long time for coronary artery calcium scoring and has recently also been employed as a very promising concept to reduce the effective dose of coronary CT angiography [68].

DeFrance et al. propose prospectively ECG-gated helical (spiral) acquisitions as a very promising new prospective acquisition technique for coronary CT angiography [9]. After helical data acquisitio

Editorial Comment on the article of DeFrance et al. (doi: 10.1007/s10554-009-9522-6).