CT coronary angiography: 256-slice and 320-detector row scanners

Curr Cardiol Rep. 2010 Jan;12(1):68-75. doi: 10.1007/s11886-009-0075-z.


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.

Publication types

  • Review

MeSH terms

  • Chest Pain
  • Coronary Angiography / instrumentation*
  • Coronary Angiography / methods
  • Coronary Artery Disease / diagnosis*
  • Coronary Artery Disease / pathology
  • Coronary Vessels / pathology
  • Endothelium, Vascular
  • Humans
  • Myocardial Perfusion Imaging
  • Radiographic Image Enhancement
  • Tomography, Spiral Computed / instrumentation*
  • Tomography, Spiral Computed / methods
  • Tomography, X-Ray Computed / instrumentation
  • Tomography, X-Ray Computed / methods