With the Somatom plus 4 volume zoom shot (Siemens, Forchheim) is to us a CT of the recent generation at the disposal. Here a multi-layer spiral concerns CT, i.e. can at the same time become scanned 4 layers with a Kollimierung from 0,5 to 5 mm. With a 0,5s tube rotation in such a way increases in output know around the 8fache to be reached in see to the Einzeiler. Usable in favor of a shorter investigation time or the approximation to the ideal of the isotropic Bildvoxels.