The typical MDCT scanner has multiple scanning modes for every situation. A slice-by-slice data acquisition mode is used for 2D images on each plane. A volumetric image mode, where overlapping slices are taken from two different focal points and reconstructed, is used for most 3D images. This scan can be completed within one breath hold and can be programmed to follow the sinus rhythm to take accurate images of the beating heart. Another mode can be used for real-time image tracking for a fast dynamic contrast study. [2]

To optimize the accuracy of the scans and decrease the procedure time, the MDCT scanner quickly alternates the focal points of the deflected x-ray beam. When the two x-ray projections reach the detector, they overlap half a slice width in the z axis. The overlap doubles the scan data in that axis, improving image quality, decreasing slice width, and removing windmill artifacts, without increasing the radiation dose. [2]