Recording an image data record with an x-ray imaging system

An x-ray imaging system comprising:

• a recording system comprising:
• an x-ray detector and an x-ray source arranged on a bracket, the recording system being configured to rotate in unrestricted manner around an examination object, wherein the x-ray imaging system is configured to record a plurality of projection images from different projection directions and an image data record in accordance with an acquisition protocol during an unrestricted rotation of the recording system around the examination object;
• a system controller configured to provide a previously recorded calibration data record associated with the x-ray imaging system, the previously recorded calibration data record including measurement data from a plurality of unrestricted rotations of the recording system around the examination object, the system controller also being configured to load an acquisition protocol;
• an input configured to receive at least one selectable acquisition parameter, the at least one acquisition parameter including a period of acquisition, a number of projection images to be acquired, an angular region of the acquisition to be recorded, an angular increment between every two sequential projection images, or any combination thereof;
• and
• a computer configured to calculate the acquisition protocol for the image data record based on the at least one received acquisition parameter and the provided calibration data record.