Patent ID: 9498168
Filing Date: 2016-11-22
CPC Classification: A61B

Claim Text:
1. A method of X-ray CT scanning of an examination object using two emitter-detector systems arranged at different angles on a shared gantry of a CT system, each of the two emitters including a focal point and each of the two detectors being embodied as a multi-row detector with a scattered radiation grid operating in a two-dimensional manner, the method comprising: generating, during the scanning process between each of the respective focal points and an opposing one of the two detectors of each of the two emitter-detector systems, a radiation bundle diverging in two dimensions by delimiting emitter-side diaphragms mounted on the gantry in a fixed position relative to a respective emitter, wherein the two radiation bundles are adjustably delimited by the diaphragms to irradiate an entire surface of a respective multi-row detector or less than an entire surface of the respective multi-row detector and, such that the radiation bundles are free of mutual points of intersection at least in the examination object; and optimizing alignment of the emitter-detector systems by tilting at least one multi-row detector relative to the system axis and the gantry and displacing at least one multi-row detector in the z-direction to thereby optimize alignment of the at least one emitter-detector system.