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2D collimator for a radiation detector and method for manufacturing such a 2d collimator

A radiation detector and collimator technology, applied in the field of 2D-collimator, can solve problems such as scrapping, 2D-collimator module and detector sheet deflection, achieve low manufacturing cost, and avoid human-made damage or interference , The effect of reducing maintenance costs

Active Publication Date: 2012-07-25
SIEMENS HEALTHCARE GMBH
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Problems solved by technology

[0010] However, the bonded 2D-collimator module in the event of a fault leads to a deflection or failure of the 2D-collimator module and the detector sheet, since it is generally no longer possible to detach without damage

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  • 2D collimator for a radiation detector and method for manufacturing such a 2d collimator
  • 2D collimator for a radiation detector and method for manufacturing such a 2d collimator
  • 2D collimator for a radiation detector and method for manufacturing such a 2d collimator

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Embodiment Construction

[0037] In the figures, identically acting parts have the same reference numerals. For parts that are repeated in one figure, sometimes only one of the parts is indicated by a reference number for the sake of clarity. The views in the drawings are schematic and not necessarily drawn to scale, wherein dimensions may vary from figure to figure.

[0038] exist figure 1 The principle structure of the computed tomography device 24 is shown in . The computed tomography device 24 comprises a radiation source 25 in the form of an X-ray tube, from whose focal point 26 emits a fan-shaped X-ray 27 . The fan-shaped x-rays 27 pass through an object 28 to be examined or the patient and strike a radiation detector 20 , here an x-ray detector.

[0039] The radiation source 25 and the radiation detector 20 are arranged opposite each other on a frame (not shown here) of the computed tomography device 24, which frame can be direction about the system axis (=patient axis) of the computed tomo...

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Abstract

A 2D collimator is disclosed for a radiation detector (20). In at least one embodiment, the 2D collimator includes 2D collimator modules(2,3) arranged in series, wherein adjacent 2D collimator modules are glued together to establish a fixed mechanical connection (4) to facing module sides(5), and wherein, on their free-remaining side, the outer 2D collimator modules(3) have a retaining element (7)for mounting the 2D collimator (1)opposite a detector mechanism. A method for manufacturing such a 2D collimator (1)is also disclosed.

Description

technical field [0001] The invention relates to a 2D-collimator for a radiation detector and a method for producing the 2D-collimator. Background technique [0002] Scattered radiation mainly occurs due to the interaction of the primary radiation emitted from the focal point of the radiation source with the object to be examined. Due to this interaction, scattered radiation strikes the radiation sensor of the radiation detector from a different spatial direction than the primary radiation and causes artifacts in the reconstructed image. [0003] Therefore, in order to reduce the proportion of detected scattered radiation in the detection signal, a collimator is connected in front of the radiation sensor. Such collimators have absorbing elements whose absorbing surfaces are aligned radially fan-shaped to the focus of the radiation source, so that only radiation from the spatial direction that is in focus can hit the radiation detector. [0004] Even slight tilting or incorr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01T7/00G21K1/02
CPCG21K1/025Y10T156/1089
Inventor A·弗伦德C·伯翰G·肖帕J·莱格
Owner SIEMENS HEALTHCARE GMBH
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