Method for determining an estimation of a scattered radiation distribution and for training at least one trained model, processing device, x-ray device, computer program, and data medium

A computer-implemented method for training at least one trained model by which an estimation algorithm or at least one respective subalgorithm or partial algorithm of the estimation algorithm is implemented, using machine learning, the computer-implemented method comprising:

• receiving training datasets, each of which comprises source data and a plurality of desired results, wherein the source data in each case is or comprises a two-dimensional X-ray image or a two-dimensional intermediate image that is based on an X-ray imaging procedure or a simulation of an X-ray imaging procedure, and wherein the respective desired result specifies a respective partial scattered radiation image that is to be provided by the estimation algorithm during a processing of the source data of the respective training dataset;
• training the at least one trained model using a supervised learning based on the training datasets;
• and
• providing the at least one trained model.

A processing device for determination of an estimation of a two-dimensional scattered radiation distribution in a two-dimensional X-ray image, the determination being based on an imaging by an X-ray detector, the processing device comprising:

• a processor configured to:
• receive the two-dimensional X-ray image;
• apply an estimation algorithm to the two-dimensional X-ray image or to a two-dimensional intermediate image determined from the two-dimensional X-ray image, wherein the estimation algorithm determines a respective two-dimensional partial scattered radiation image for a plurality of physical scatter processes, such that image values of pixels of the respective partial scattered radiation image in each case describe an estimated value for a respective scattered radiation dose that was radiated in onto a respective detector region of the X-ray detector assigned to the respective pixel during acquisition of the X-ray image by the respective physical scatter process;
• and
• determine the estimation of the scattered radiation distribution based on the plurality of two-dimensional partial scattered radiation images.

An X-ray device comprising:

• an X-ray source;
• an imaging X-ray detector;
• and
• a processing device for determination of an estimation of a two-dimensional scattered radiation distribution in a two-dimensional X-ray image, the determination being based on an imaging by the imaging X-ray detector, the processing device comprising:
• a processor configured to:
• receive the two-dimensional X-ray image;
• apply an estimation algorithm to the two-dimensional X-ray image or to a two-dimensional intermediate image determined from the two-dimensional X-ray image, wherein the estimation algorithm determines a respective two-dimensional partial scattered radiation image for a plurality of physical scatter processes, such that image values of pixels of the respective partial scattered radiation image in each case describe an estimated value for a respective scattered radiation dose that was radiated in onto a respective detector region of the imaging X-ray detector assigned to the respective pixel during acquisition of the X-ray image by the respective physical scatter process;
• and
• determine the estimation of the scattered radiation distribution based on the plurality of two-dimensional partial scattered radiation images.

In a non-transitory computer-readable storage medium that stores instructions executable by one or more processors to determine an estimation of a two-dimensional scattered radiation distribution in a two-dimensional X-ray image, the determination being based on an imaging by an X-ray detector, the instructions comprising:

• receiving the two-dimensional X-ray image;
• applying an estimation algorithm to the two-dimensional X-ray image or to a two-dimensional intermediate image determined from the two-dimensional X-ray image, wherein the estimation algorithm determines a respective two-dimensional partial scattered radiation image for a plurality of physical scatter processes, such that image values of pixels of the respective partial scattered radiation image in each case describe an estimated value for a respective scattered radiation dose that was radiated in onto a respective detector region of the X-ray detector assigned to the respective pixel during acquisition of the X-ray image by the respective physical scatter process;
• and
• determining the estimation of the scattered radiation distribution based on the plurality of two-dimensional partial scattered radiation images.