COMPUTER-IMPLEMENTED METHOD FOR DETERMINING AT LEAST ONE MAIN ACQUISITION PARAMETER AND METHOD FOR ACQUIRING A MAIN X-RAY IMAGE

Computer-implemented method for determining at least one main acquisition parameter determining a dose of x-rays to be emitted from an x-ray emitter during a main image acquisition that uses the x-ray emitter and an x-ray detector for imaging an object, especially a patient during a medical image acquisition,wherein first image data of a first preparatory image is evaluated to determine if a repeat condition is fulfilled and/or to determine the main acquisition parameter and/or at least one second preparatory acquisition parameter, wherein the first preparatory image is an image acquired by the x-ray detector using at least one first preparatory acquisition parameter to control the x-ray emitter,wherein either in all cases or only when the repeat condition is fulfilled the main acquisition parameter is determined depending on second image data of a second preparatory image, that is an image acquired by the x-ray detector after the first preparatory image while the or at least one second preparatory acquisition parameter is used to control the x-ray emitter.