Method for determining at least one scaling factor for measured values of a computed tomography unit

摘要

A method is disclosed for determining at least one scaling factor for measured values obtained with the aid of a computed tomography unit. The computed tomography unit includes at least two recording systems that can rotate about a common rotation axis. Each of the systems includes an X-ray source and a detector having detector elements for detecting X-radiation emanating from the X-ray source. To reduce artifacts when use is made of measured values of the two recording systems in the reconstruction of an image, a scaling factor is determined for the measured values of the first or of the second recording system on the basis of measured values that originate from projections recorded from an object with the aid of the two recording systems. Each of the two recording systems is used to record at least one projection at at least substantially the same projection angle, whose measured values are compared with one another.