Method and CTDevice for computer tomographic spiral scanning of a patient

A method for computer tomographic spiral scanning of a patient in the region of a moving organ, using a CT device with at least one detector, comprising:

• carrying out a spiral scan at a pitch, which is less than a maximum pitch, with which 180° image data is still reconstructable, using at least one detector including a predefined z width and a beam directed thereon, wherein during the scan, evaluated detector data with respect to the z width and position on the at least one irradiated detector are restricted as a function of the projection angle in such a way that an effective virtual detector with a relatively smaller z width and with a z speed profile, which differs from a z speed profile of the at least one detector, is produced respectively;
• and
• reconstructing the region of the moving organ on the basis of the detector data of the at least one virtual detector.