Patent ID: 7436930

Claim:
A method of controlling a dose or a dose output while recording x-ray images using an x-ray detector comprising image elements configured to record a plurality of dose data values, the method comprising: selecting a dominant having a plurality of image elements from a previously recorded x-ray image; determining an actual dose or dose output value based on the plurality of dose data values related to the plurality of image elements; prescribing a voltage, current or exposure value to set the actual dose or dose output value; and recording an x-ray image using the set dose or set dose output value wherein the step of determining the actual dose or dose output value includes: determining a frequency distribution from the plurality of dose data values related to the plurality of image elements; determining a p-quantile based on the frequency distribution; determining a further dose data value from the p-quantile; and determining the actual dose or dose output value based on the further dose data value.