Method for determining a defined position of a patient couch in a C-arm computed tomography system, and C-arm computed tomography system

摘要

For facilitating the optimal positioning of a patient resting on the couch of a C-arm computed tomography system, an input is received, via individual pixels or areas of pixels selected in a predetermined image data set, thus enabling the area of interest to be highlighted. Image data of the patient resting on the couch is acquired. These two processes together make it possible to calculate the position, relative to the couch, of a marked-out point that is to coincide with the isocenter for the rotation of the C-arm, and from this at least one coordinate that serves to define the position of the couch can be derived. If this coordinate is displayed, a doctor performing the treatment can move the couch to the appropriate position by hand. The couch can also be designed to be automatically movable by electric motors after determining the coordinate.