US 10,376,232 B2
Method and x-ray imaging device for automatically controlling the exposure in x-ray imaging
Dirk Ertel, Forchheim (DE)
Assigned to SIEMENS HEALTHCARE GMBH, Erlangen (DE)
Appl. No. 16/92,254
Filed by Siemens Healthcare GmbH, Erlangen (DE)
PCT Filed Feb. 24, 2017, PCT No. PCT/EP2017/054287
§ 371(c)(1), (2) Date Oct. 9, 2018,
PCT Pub. No. WO2017/178144, PCT Pub. Date Oct. 19, 2017.
Claims priority of application No. 10 2016 206 071 (DE), filed on Apr. 12, 2016.
Prior Publication US 2019/0133543 A1, May 9, 2019
Int. Cl. A61B 6/00 (2006.01); H05G 1/42 (2006.01)
CPC A61B 6/542 (2013.01) [H05G 1/42 (2013.01); A61B 6/503 (2013.01); A61B 6/504 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for automatically controlling exposure in x-ray imaging of an object that is moving and is to be irradiated, the method comprising:
creating x-ray images at different points in time with a pulse width of an x-ray radiation;
establishing at least one moving area of an image from at least two of the x-ray images created;
establishing at least one moving edge of the at least one moving area of the image;
selecting at least one pixel of the at least one moving edge;
establishing a time dependence of an intensity of the at least one pixel selected, from the x-ray images created;
evaluating the time dependence of the intensity; and
changing the pulse width as a function of the evaluating.