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Radiation image detecting device

A technology of radiographic images and detection equipment, applied in the direction of radiation measurement, radiation intensity measurement, and instruments for radiological diagnosis, etc., can solve the problems of weight increase, etc., and achieve improved moisture resistance, reduced backscattering, handling and load resistance Good results

Inactive Publication Date: 2012-12-12
FUJIFILM CORP
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  • Abstract
  • Description
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Problems solved by technology

[0007] However, providing a radiation absorbing layer made of a material having a large atomic number to reduce backscattering, as described above, and in addition, forming columnar crystals on the radiation absorbing layer necessarily causes an increase in weight
Therefore, it is not suitable for portable radiographic image detection equipment such as electronic cassettes
Also, since the columnar crystals of CsI etc. deliquesce, the scintillator must be highly moisture-proof

Method used

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Embodiment Construction

[0031] For example, if figure 1 As shown in , the radiation image detection apparatus of the present invention is used as an electronic cassette 10 . For example, the electronic cassette 10 is the same size as a conventional cassette containing X-ray film or an IP plate, and can be loaded in a cassette cavity of an imaging support instead of an X-ray film cassette. The housing 12 of the electronic cassette 10 is in the shape of a box as a whole, and its rectangular top serves as a radiation receiving surface 11 for radiation incident through a sample (patient's body). The top plate 13 of the casing 12 is made of a low-radiation-absorbing material such as carbon to prevent absorption of radiation and ensure sufficient strength. The case 12 other than the top plate 13 is made of a radiation transparent material such as ABS resin.

[0032] The radiation receiving surface 11 of the electronic cassette 10 is provided with an indicator 15 having a plurality of LEDs. The indicator...

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Abstract

The invention relates to a radiation image detecting device. A substrate is made of copper having an atomic number of 29. The substrate is formed in the shape of a box without a top, and has a rectangular bottom and sidewalls erected at four sides surrounding the bottom. A scintillator is evaporated onto the bottom. The scintillator includes a non-columnar crystal and a plurality of columnar crystals erected by crystal growth. A photodetector tightly adheres to top surfaces of the sidewalls of the substrate through an O-ring, so as to close the top of the box-shaped substrate. The substrate, the photodetector, and the O-ring seal the scintillator in an air-tight manner.

Description

technical field [0001] The present invention relates to a radiation image detection apparatus used in a radiation imaging apparatus to detect a radiation image after converting the radiation image into an optical image. Background technique [0002] A radiation imaging apparatus includes: a radiation generating device for emitting radiation, that is, X-rays; and a radiation image detecting device for detecting a radiation image formed by radiation passing through a sample. As one type of radiation image detection apparatus, an indirect conversion type radiation image detection apparatus is known. An indirect conversion type radiation image detection apparatus having a photodetector and a scintillator stacked on each other detects a radiation image after converting the radiation image into an optical image. The scintillator is CsI, GOS (Gd 2 o 2 S; Tb), etc., and convert radiographic images into optical images. The photodetector has an array of pixels, each of which inclu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N23/04A61B6/00
CPCG03B42/02G01T1/202G01T1/2992G01T1/20183G01T1/20187G01T1/20189G01T1/1644G01T1/20
Inventor 岩切直人中津川晴康
Owner FUJIFILM CORP
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