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Coronary CT Angiography¹

¹ From the Department of Radiology (U.J.S., P.L.Z., G.S., C.H., J.M.K., P.C.) and Division of Cardiology, Department of Medicine (U.J.S., P.L.Z.), Medical University of South Carolina, 169 Ashley Ave, Charleston, SC 29425; Department of Radiology, Università Cattolica del Sacro Cuore, Rome, Italy (G.S.); and Department of Radiology, Johann Wolfgang Goethe University, Frankfurt, Germany (C.H.). Received December 30, 2005; revision requested February 24, 2006; revision received March 16; accepted May 2; final version accepted July 6. Address correspondence to U.J.S. (e-mail: schoepf{at}musc.edu).

Owing to ongoing technical refinements and intense scientific and clinical evaluations, computed tomography (CT) of the heart has left the research realm and matured into a clinical application that is about to fulfill its promise to replace invasive cardiac catheterization in selected patient populations. CT coronary angiography is technically more challenging than other CT applications owing to the nature of its target, the continuously moving heart. Rapid technical developments in this field require constant adaptation of acquisition protocols. These challenges, however, are in no way insurmountable for users with knowledge of the general CT technique. The intent of this communication is to provide those interested in and involved with coronary CT angiography with a step-by-step "manual" describing the authors' approach to performing coronary CT angiography. Included are considerations regarding appropriate patient selection, patient medication, radiation protection, contrast enhancement, acquisition and reconstruction parameters, image display and analysis techniques, and the radiology report. The recommendations are based on the authors' experience, which spans the evolution of multi–detector row CT for cardiac applications, from its beginning to the advent of the most current generations of 64-section and dual-source CT technologies, which they believe herald the entrance of this examination into routine clinical practice.

© RSNA, 2007

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