Method for operating a computed tomography apparatus to adjust attenuation valves from respective radiation detector elements

A method for operating a computed tomography apparatus having an image data acquisition system comprising a radiation source that emits radiation having a radiation intensity, and a radiation detector on which radiation is incident, said radiation detector comprising a plurality of detector elements with each detector element generating an attenuation value representing said radiation incident thereon, said image data acquisition system having a measurement region and being adapted to interact with a subject, having an examination region, to acquire image data from the examination region during a relative displacement between said measurement region and said examination region, said method comprising the steps of:

• automatically electronically identifying selected detector elements, from among said plurality of detector elements, on which said radiation is incident that penetrated through the examination region in a current irradiation of the examination region;
• from at least one of said characteristic values, automatically electronically determining an adjustment value for adjustment of said radiation intensity;
• and
• in a subsequent irradiation of the examination region following said current irradiation, automatically electronically adjusting the intensity of the radiation emitted in said subsequent irradiation dependent on said adjustment value.