Method for scattered radiation correction
AssigneeSiemens Healthineers AG
InventorPhilipp Roser
Life of this patent
Estimating the term…
Abstract
A computer-implemented method for scattered radiation correction, comprises: receiving a plurality of projection images mapping an object; receiving or determining a virtual three-dimensional reference image mapping the object; determining at least one scattering model; subtracting the at least one scattering model from the projection images to determine corrected projection images; determining a corrected medical image as a function of the corrected projection images; comparing the corrected image with the virtual reference image; and checking whether an abort criteria is met. If the abort criteria is met, then the corrected medical image is provided. If the abort criteria is not met, then the at least one scattering model is adapted and the method is repeated based on the adapted scattering model.
Claims20
A computer-implemented method for scattered radiation correction in a three-dimensional medical image, the computer-implemented method comprising:
- receiving a plurality of projection images, wherein the plurality of projection images map an object;
- receiving or determining a virtual three-dimensional reference image, wherein the virtual three-dimensional reference image maps the object;
- determining at least one scattering model;
- subtracting the at least one scattering model from the plurality of projection images to determine a plurality of corrected projection images;
- determining a corrected three-dimensional medical image as a function of the plurality of corrected projection images;
- comparing the corrected three-dimensional medical image with the virtual three-dimensional reference image to determine a quality parameter;
- checking, based on the quality parameter, whether an abort criteria is met;
- providing the corrected three-dimensional medical image in response to the abort criteria being met;
- and
- in response to the abort criteria not being met,
- adapting the at least one scattering model as a function of the quality parameter, and
- repeating the computer-implemented method based on the adapted at least one scattering model.
A system for scattered radiation correction in a three-dimensional medical image, the system comprising:
- an interface and a computing unit, wherein the interface and the computing unit are configured to cause the system to carry out a method including
- receiving a plurality of projection images, wherein the plurality of projection images map an object,
- receiving or determining a virtual three-dimensional reference image, wherein the virtual three-dimensional reference image maps the object,
- determining at least one scattering model,
- subtracting the at least one scattering model from the plurality of projection images to determine a plurality of corrected projection images,
- determining a corrected three-dimensional medical image as a function of the plurality of corrected projection images,
- comparing the corrected three-dimensional medical image with the virtual three-dimensional reference image to determine a quality parameter,
- checking, based on the quality parameter, whether an abort criteria is met,
- providing the corrected three-dimensional medical image in response to the abort criteria being met, and
- in response to the abort criteria not being met,
- adapting the at least one scattering model as a function of the quality parameter, and
- repeating the method based on the adapted at least one scattering model.
Dependencies are inferred from the claim text.