Multichannel CT has become a very valuable tool in diagnostic imaging. It provides a combination of fast and long coverage in conjunction with thin slices. The fast scanning allows for single-breathhold scanning, fewer motion artifacts, and better use of intravenous contrast media. The brains of the MCCT scanners are the sophisticated detector arrays packed with electronics to handle the flow of image information. The submillimeter detectors rows offer isotropic properties to the image voxels, thereby creating viewing in any plane and better three-dimensional renderings.