X-ray device and a method for operating an X-ray device when carrying out an X-ray examination

US11331065B2 · kind B2 · utility

Assignee

• Siemens Healthcare Limited · DE

Inventors

• Philipp Bernhardt · Forchheim, DE
• Andreas Berting · Schlüchtern, DE
• Stefan Böhm · Oberasbach, DE
• Boris Stowasser · Erlangen, DE

Key dates

• Filing date: Feb 5, 2020
• Grant date: May 17, 2022
• Expiry date: Jun 11, 2040

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61B6/5258
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

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.