A control device for a computed tomography system for imaging an organ in a human or animal body, the system including an X-ray radiation source which rotates along a circumferential ring around the body, and a movement device in order to adjust the circumferential ring and the body relative to one another, the control device comprising:
- a signal input for inputting a cycle signal representing a movement cycle of the organ, the control device being designed to operate the computed tomography system such that the circumferential ring is fixed in one position for recording of an image data segment on one slice plane during one revolution of the X-ray radiation source relative to the body, the X-ray radiation source is triggered by the cycle signal and is activated for a limited measurement time interval, and the circumferential ring is moved sequentially to further positions along the body between each of the recordings in order to record image data on further slice planes;
- and
- a measurement time interval determining unit to dynamically match the timing and length of the measurement time interval for an image data segment to be recorded to a structure of the cycle signal at that time.