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X-ray detector and method for keeping the temperature of the x-ray detector constant

A detector and X-ray technology, applied in X/γ/cosmic radiation measurement, electric temperature control, radiation measurement, etc.

Active Publication Date: 2016-05-04
SIEMENS HEALTHCARE GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

As a result, the signal properties of the detector are temporarily changed, which ultimately leads to artifacts in the image data which are formed on the basis of the measurement data determined with the detector.

Method used

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  • X-ray detector and method for keeping the temperature of the x-ray detector constant
  • X-ray detector and method for keeping the temperature of the x-ray detector constant
  • X-ray detector and method for keeping the temperature of the x-ray detector constant

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Embodiment Construction

[0045] figure 1 The structure according to the invention of a detector element 1 with a direct-converting sensor material is shown, in which a radiation-induced current I is generated between a negative potential with a voltage U and earth ground. Depending on the intensity of the radiation seen by the detector elements, different amounts of heat are generated by the energy input of the radiation γ and by the current I generated in the sensor material. At the same time, a constant heat removal W takes place, for example via the carrier 3 on which the sensor 2 is mounted. out . According to the invention, an additional heat-generating circuit, namely the heating element 4 , is now arranged in the region of the ASIC arranged between the carrier 3 and the sensor 2 , the thermal power of which remains such that it maintains such a low incident radiation intensity. High, ie, compensates for the heat input that occurs at maximum radiant intensity, while correspondingly reduces the...

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Abstract

The invention relates to an X-ray detector with a photon-counting direct conversion detector element (1, 1.1-1.20) and at least one detector element (1) for holding an X-ray detector of a CT system (C1) , 1.1-1.20) temperature-constant method, wherein said detector element (1, 1.1-1.20) employs a sensor material (2) which converts incident photons of radiation directly into said sensor material (2) freely moving charges in and wherein the number of incident photons is determined with the aid of a circuit arrangement, in particular an ASIC (6), with respect to a predetermined energy range, in particular for imaging, wherein at least one detector element (1 , 1.1-1.20) the total electric power is constant.

Description

technical field [0001] The invention relates to a method for keeping the temperature constant of at least one detector element of an X-ray detector of a CT system, wherein the detector element employs a sensor material which directly converts incident photons of radiation into free The charge and the number of incident photons are determined with the aid of the circuit arrangement for a predetermined energy range, in particular for imaging. [0002] Furthermore, the invention relates to an x-ray detector of a CT system, which has a plurality of detector elements arranged in a planar manner, the detector elements having a sensor material and a plurality of circuit arrangements, in particular ASICs, wherein The sensor material converts incident photons of radiation directly into free charges, while the number of incident photons is determined by the circuit arrangement with respect to a predetermined energy range, in particular for imaging. Background technique [0003] It is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05D23/19G01T7/00
CPCG01T1/244A61B6/03A61B6/12G01T7/00
Inventor T.汉尼曼E.克拉夫特D.尼德莱纳
Owner SIEMENS HEALTHCARE GMBH