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Direct conversion x-ray radiation detector, computed tomography system and method

A radiation detector and X-ray technology, applied in the field of detecting incident X-ray radiation, can solve the problem of not getting the total inhomogeneity of space charge, and achieve the effect of weakening the radiation

Active Publication Date: 2018-08-03
SIEMENS HEALTHCARE GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] No solution to equalize the overall inhomogeneity of space charge in semiconductors has been found so far

Method used

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  • Direct conversion x-ray radiation detector, computed tomography system and method
  • Direct conversion x-ray radiation detector, computed tomography system and method
  • Direct conversion x-ray radiation detector, computed tomography system and method

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Embodiment Construction

[0040] figure 1 An exemplary CT system 1 is shown. The CT system 1 comprises a gantry housing C6 in which a gantry not shown in detail is located, the first X-ray tube C2 and the opposite first detector C3 are fixed on the gantry housing superior. Optionally, a second X-ray tube C4 and an opposite second detector C5 are provided. The patient 7 is on a patient couch C8 movable in the direction of the system axis C9, with which the patient can be moved continuously or sequentially along the system axis C9 during scanning with X-ray radiation through the X-ray tube C2 and The measurement field between C4 and the respective corresponding detectors C3 and C5. This process is carried out by the calculation and control unit C10 with the aid of the computer program Prg 1 to Prg n Take control.

[0041] According to the invention, detectors C3 and C5 are designed as direct-conversion x-ray radiation detectors which, in the embodiment shown here, have at least semiconductors for d...

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PUM

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Abstract

The invention relates to a direct-converting x-ray radiation detector (C3, C5) for detecting x-ray radiation, having at least a semiconductor (1) for detecting x-ray radiation, which has a shielding with respect to the x-ray radiation and unshaded areas; a pixelated electrode disposed on the semiconductor and a continuous electrode (4) disposed on the semiconductor opposite the pixelated electrode; and at least one light source that radiates light with additional optical radiation. The continuous electrode is irradiated to generate additional charge carriers, the light source being configured to irradiate the shaded region with an additional light radiation of different intensity than the non-shielded region. The invention relates to a CT system (C1) with a direct-conversion X-ray radiation detector and a method for detecting incident X-ray radiation by means of a direct-conversion X-ray radiation detector, wherein the additional optical radiation, Irradiates shaded areas with a different intensity than unshaded areas.

Description

technical field [0001] The invention relates to a direct-converting x-ray radiation detector for detecting x-ray radiation, which has at least a semiconductor for detecting x-ray radiation, the semiconductor having a shaded area and an unshielded area with respect to the x-ray radiation a region of the semiconductor; a pixelated electrode disposed on the semiconductor and a continuous electrode disposed on the semiconductor opposite the pixelated electrode; and at least one light source that irradiates the continuous electrode with additional light radiation for use in to generate additional carriers. [0002] The invention also relates to a CT system and a method for detecting incident x-ray radiation by means of a direct-conversion x-ray radiation detector. Background technique [0003] Direct conversion detectors based on semiconductor materials such as CdTe, CdZnTe, CdZnTeSe, CdTeSe, CdMnTe, InP, TIBr2, HgI2 are used in CT systems, dual energy CT systems, SPECT systems ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B6/03
CPCA61B6/032A61B6/4233A61B6/4291G01T1/241G01T1/2928
Inventor T·埃尔格勒E·戈德尔B·克赖斯勒M·莱因万德C·施勒特
Owner SIEMENS HEALTHCARE GMBH