Philipp Bernhardt,Andreas Berting,Stefan Böhm,Boris Stowasser
申请号：
US16782173
公开号：
US20200268336A1
申请日:
2020.02.05
申请国别(地区):
US
年份:
2020
代理人:
摘要：
A method is provided for operating a medical X-ray device when carrying out an X-ray examination. In order to reduce the duration of the scan for the reliable determination of changes over time in a body region of an examination subject by an X-ray based subtraction method, the method includes recording a plurality of first X-ray images of a body region of an examination subject, wherein the recording of the plurality of first X-ray images ensues at a constant X-ray imaging frequency and a constant X-ray dose for each X-ray image recording. The method further includes generating a mask image, wherein the generation of the mask image includes an averaging of the plurality of first X-ray images； recording of at least one second X-ray image of the body region at a further time after the recording of the plurality of first X-ray images, wherein the recording of the at least one second X-ray image ensues at the same constant X-ray imaging frequency and the same constant X-ray dose for each X-ray image recording as for recording the first X-ray images； and generating a total image at least as a function of the mask image and of the at least one second X-ray image.
