Patent ID: 7623905

Claim:
A method for production of computer-tomographic scans via a CT system of a patient during an intervention with an instrument, the method comprising: moving at least one X-ray tube on a rotation plane around the patient to produce a beam cone, a central direction of beams of the beam cone being set at an angle to an intervention axis and a detector with a plurality of detector elements measuring the radiation intensity after passing through the patient; controlling position and orientation of the patient relative to a gantry, which holds the X-ray tube and the detector; reconstructing computer-tomographic scans from the measured values; and displaying at least one slice plane, which is parallel to the intervention axis, differing from the rotation plane of the beam cone, of a reconstructed computer-tomographic scan on a display, wherein an inclination of the angle of the central direction of the scanning beam cone to the intervention axis is produced by inclining the rotation plane of the gantry with respect to a system axis that is substantially parallel to the patient, the intervention axis is detected, and the maximum angle settable between the central direction of the scanning beam cone and the intervention axis, usable to display a predetermined region on the plane of the intervention axis, is calculated automatically during the scan, and this angle is adjusted such that it is continuously matched.