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Electronic cassette for radiation imaging

A technology of radiographic imaging and radiation, which is applied in the field of electronic boxes, can solve problems such as uneven temperature of the detection panel that has not been raised

Active Publication Date: 2012-07-18
FUJIFILM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] JP-A 2005-313613 and U.S. Patent No. 4,638,501 disclose radiation-transmitting panels having lightness, high hardness, and high radiation-transmitting properties, but do not propose prevention of detection due to residual heat given by the radiation-transmitting panel The temperature of the panel is not uniform

Method used

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  • Electronic cassette for radiation imaging
  • Electronic cassette for radiation imaging
  • Electronic cassette for radiation imaging

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Embodiment Construction

[0039] exist figure 1Among them, an X-ray imaging system 10 as a radiation imaging system includes an X-ray source device 11 and an X-ray imaging device 12 . The X-ray source device 11 includes an X-ray source 13 , a source control unit 14 and an activation switch 15 . The source control unit 14 controls the X-ray source 13 . The X-ray source 13 includes an X-ray tube 13a and a collimator 13b for limiting the area of ​​X-rays from the X-ray tube 13a.

[0040] The X-ray tube 13a has an anode and a cathode. The cathode has a filament for emitting thermionic electrons. The anode is the target for emitting X-rays by thermionic impact from the cathode. An example of a collimator 13b has a collimator opening and a plurality of lead plates. A collimator opening is provided at the center. The lead plates are combined in a raster form for shielding X-rays, and are moved to change the opening size of the collimator opening to determine the field of view area.

[0041] The source ...

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Abstract

An electronic cassette for radiation imaging has an image detection device for forming an image of an object irradiated with radiation. The image detection device includes a housing. A window opening is formed in the housing, for receiving the radiation. A scintillator is contained in the housing, for converting the radiation from the window opening into light. A detection panel is contained in the housing, disposed between the scintillator and window opening, for converting the light into a signal. A radio transparent plate of a quadrilateral shape is disposed to close the window opening, is radio transparent to the radiation, has at least high and low thermal conductivity sheets arranged in a direction of entry of the radiation into the housing, the radio transparent plate being so anisotropic that thermal conductivity is higher in a longitudinal direction of the quadrilateral shape than in a transverse direction of the quadrilateral shape.

Description

technical field [0001] The present invention relates to an electronic cassette for radiographic imaging. More specifically, the present invention relates to an electronic cassette for radiographic imaging in which temperature unevenness can be prevented to maintain the image quality of radiographic images. Background technique [0002] In the field of medical diagnosis by using X-rays as radiation, an X-ray imaging system is known as a radiation imaging system. An X-ray imaging device included in an X-ray imaging system forms an X-ray image of a subject by receiving X-rays transmitted through the subject after being irradiated with an X-ray source. Specifically, an image detection device or an FPD device (Flat Panel Detection Device) is included in the X-ray imaging apparatus. The detection surface of the image detection device has pixels for storing signal charges according to the amount of received X-rays. An X-ray image is formed by storing signal charges of each pixel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B6/00
CPCA61B6/4233G01T1/00A61B6/4405A61B6/4283G01T1/20A61B6/4452G01T1/2018G01T1/2019G01T1/20188
Inventor 八木启太北川祐介岛田克己
Owner FUJIFILM CORP
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