Method for reconstructing a three-dimensional image volume and x-ray devices

An x-ay device for reconstructing a three-dimensional image volume of a region of interest of a patient, comprising:

• a recording system comprising an x-ray source and an x-ray detector that records a plurality of individual two-dimensional projection images of the region of interest by rotating the recording system about a first rotation center between the x-ray source and the x-ray detector and simultaneously about a second rotation center in a focal point of the x-ray source;
• and
• a control and computing unit that:
• combines the individual two-dimensional projection images to produce an extend two-dimensional projection image, and
• reconstructs the three-dimensional image volume from the extend two-dimensional projection image with a reduced artifact.

An x-ray device for reconstructing a three-dimensional image volume of a region of interest of a patient, comprising:

• a recording system comprising an x-ray source and an x-ray detector that records a plurality of individual two-dimensional projection images of the region of interest by rotating the recording system about a first rotation center between the radiation source and the x-ray detector;
• an adjustable patient support table that rotates the region of interest about a second rotation center in a focal point of the x-ray source;
• and
• a control and computing unit that:
• combines the individual two-dimensional projection images to produce an extend two-dimensional projection image, and
• reconstructs the three-dimensional image volume from the extend two-dimensional projection image with a reduced artifact.