Multidetector computed tomography (MDCT) has rapidly evolved from 4-detector row systems in 1998 to 256-slice and 320-detector row CT systems. With smaller detector element size and faster gantry rotation speed, spatial and temporal resolution of the 64-detector MDCT scanners have made coronary artery imaging a reliable clinical test. Wide-area coverage MDCT, such as the 256-slice and 320-detector row MDCT scanners, has enabled volumetric imaging of the entire heart free of stair-step artifacts at a single time point within one cardiac cycle. It is hoped that these improvements will be realized with greater diagnostic accuracy of CT coronary angiography. Such scanners hold promise in performing a rapid high quality “triple rule-out” test without high contrast load, improved myocardial perfusion imaging, and even four-dimensional CT subtraction angiography. These emerging technical advances and novel applications will continue to change the way we study coronary artery disease beyond detecting luminal stenosis.
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Dr. Frank Rybicki has received research grants from Toshiba Medical Systems and Bracco Diagnostics. No other potential conflicts of interest relevant to this article were reported.
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Hsiao, E.M., Rybicki, F.J. & Steigner, M. CT Coronary Angiography: 256-Slice and 320-Detector Row Scanners. Curr Cardiol Rep 12, 68–75 (2010). https://doi.org/10.1007/s11886-009-0075-z
- Computed tomography
- Coronary artery disease
- Wide area detector