An x-ray detector, especially for a computed tomograph, includes a number of detector modules arranged next to one another in a stacking direction with a front side, which during operation is oriented towards an x-ray source, and with a rear side lying opposite the front side. For screening against
An x-ray detector, especially for a computed tomograph, includes a number of detector modules arranged next to one another in a stacking direction with a front side, which during operation is oriented towards an x-ray source, and with a rear side lying opposite the front side. For screening against x-rays which pass during operation through an installation between two adjacent detector modules, an absorption element is positioned on the rear side of the two adjacent detector modules.
대표청구항▼
1. An x-ray detector, comprising: a plurality of detector modules, each detector module having an array of detector elements, the plurality of detector modules being arranged next to one another in a stacking direction and including a front side, which during operation is oriented towards an x-ray s
1. An x-ray detector, comprising: a plurality of detector modules, each detector module having an array of detector elements, the plurality of detector modules being arranged next to one another in a stacking direction and including a front side, which during operation is oriented towards an x-ray source, a rear side lying opposite the front side, and an installation gap formed between adjacent detector modules; andan absorption element, positioned on a rear side of two adjacent detector modules and positioned in line with the x-ray source and the installation gap between the two adjacent detector modules, the absorption element being configured to screen against x-rays which, during operation, pass through the installation gap between the two adjacent detector modules. 2. The x-ray detector of claim 1, wherein the absorption element is attached to one of the two adjacent detector modules. 3. The x-ray detector of claim 2, further comprising a chassis on the rear side of each of the modules, and a carrier element extending from the chassis into the installation gap, wherein the absorption element is attached to an end face of the carrier element that extends into the installation gap and the carrier element connects the absorption element with the chassis, and wherein the carrier element is embodied for positioning the absorption element in the stacking direction. 4. The x-ray detector of claim 3, wherein the chassis and the carrier element are formed by a one-piece, L-shaped profile strip. 5. The x-ray detector of claim 4, wherein the absorption element is screwed onto the carrier element with at least one countersunk screw. 6. The x-ray detector of claim 4, wherein the absorption element includes a material connection to the carrier element. 7. The x-ray detector of claim 6, wherein the absorption element is glued to the carrier element. 8. The x-ray detector of claim 3, wherein the absorption element is screwed onto the carrier element with at least one countersunk screw. 9. The x-ray detector of claim 3, wherein the absorption element includes a material connection to the carrier element. 10. The x-ray detector of claim 9, wherein the absorption element is glued to the carrier element. 11. The x-ray detector of claim 1, wherein the detector modules are embodied to be the same and wherein an absorption element is attached to each detector module. 12. The x-ray detector of claim 11, wherein, between the absorption elements of two adjacent detector modules or between an absorption element and an adjacent carrier element, an installation gap is provided which allows the replacement of individual detector modules without dismantling further detector modules, regardless of the position of the individual detector modules. 13. The x-ray detector of claim 1, wherein the absorption element is embodied for substantially complete absorption of the x-rays. 14. The x-ray detector of claim 1, wherein the absorption element is manufactured from tantalum, molybdenum or tungsten. 15. The x-ray detector of claim 1, wherein the x-ray detector is for a computed tomograph. 16. The x-ray detector of claim 1, further comprising a pair of curved frame rails, wherein each of the detector modules is directly fixed to the curved frame rails. 17. The x-ray detector of claim 1, wherein each of the plurality of detector modules includes a plurality of measurement cells on a front side of a chassis and the absorption element is spaced apart from the measurement cells by the chassis. 18. The x-ray detector of claim 1, wherein adjacent detector modules are arranged next to one another on an arc and an installation gap is formed between adjacent modules. 19. The x-ray detector of claim 1, wherein the installation gap increases in a radiation propagation direction. 20. The x-ray detector of claim 1, wherein the absorption element is in the installation gap between the two adjacent detector modules.
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이 특허에 인용된 특허 (3)
Mattson,Rodney A.; Luhta,Randall P.; Chappo,Marc A., Radiation detector with shielded electronics for computed tomography.
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