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US 7,742,569 B2Granted
X-ray system and method for image composition
AssigneeSiemens Aktiengesellschaft
InventorRainer Graumann
Life of this patent
Estimating the term…
Abstract
In an x-ray system and a method for image composition, congruent optical images and x-ray images of subjects provided with markers are generated. A transformation matrix/imaging matrix is formed and applied to the congruent x-ray images based on the detected identical markers in optical images. The transformation matrix is used to compose an aggregate image from the x-ray images.
Claims12
An x-ray system comprising:
- a radiographic image acquisition unit that acquires a plurality of radiographic images of a subject;
- an optical image acquisition unit that acquires a plurality of optical images of the examination subject that are respectively congruent to said x-ray images, said subject having markers applied thereto during acquisition of said radiographic images and during acquisition of said optical images, said markers being visible in each of said optical images and said radiographic images;
- an image processor that detects respective positions of said markers in each of said optical images and said radiographic images and that is configured to calculate a transformation matrix dependent on the respective positions of the markers in the respective optical images and the respective radiographic images;
- and
- said image processor being configured to compose an aggregate image of said x-ray images using said transformation matrix to convert an image content of a first of the radiographic images into a coordinate system of a second of the radiographic images to combine said first of said radiographic images with said second of said radiographic images with the same coordinate system in said aggregate image.
2 more elements
A method for combining x-ray images comprising the steps of:
- acquiring a plurality of radiographic images of a subject;
- acquiring a plurality of optical images of the examination subject that are respectively congruent to said x-ray images, said subject having markers applied thereto during acquisition of said radiographic images and during acquisition of said optical images, said markers being visible in each of said optical images and said radiographic images;
- automatically electronically detecting respective positions of said markers in each of said optical images and automatically electronically calculate a transformation matrix dependent on the respective positions of the markers in the respective optical images and the respective radiographic images;
- and
- automatically electronically composing an aggregate image of said x-ray images using said transformation matrix to convert an image content of a first of the radiographic images into a coordinate system of a second of the radiographic images to combine said first of said radiographic images with said second of said radiographic images with the same coordinate system in said aggregate image.
2 more elements
Dependencies are inferred from the claim text.