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Radiation imaging apparatus, radiation imaging system, radiation imaging method, and program

A technology of radiation imaging and radiation exposure, applied in the direction of measuring devices, radiation measurement, TV system components, etc., can solve the problems of accuracy degradation and achieve the effect of suppressing excessive exposure and low dose

Active Publication Date: 2018-12-21
CANON KK
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

Therefore, for example, the radiation capture system has a problem that when the irradiation dose from the radiation source is low, the accuracy of the dose control for stopping the irradiation of the radiation is degraded due to the influence of noise or the like

Method used

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  • Radiation imaging apparatus, radiation imaging system, radiation imaging method, and program
  • Radiation imaging apparatus, radiation imaging system, radiation imaging method, and program
  • Radiation imaging apparatus, radiation imaging system, radiation imaging method, and program

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Embodiment Construction

[0029] Embodiments of the present invention will be described in detail with reference to the accompanying drawings. It is to be noted that the constituent elements described in this embodiment are merely examples. The technical scope of the present invention is determined by the scope of the appended claims, and is not limited by the individual embodiments to be described below. In this specification, the radiation is not limited to X-rays, but may be, for example, α-, β-, or γ-rays.

[0030] will refer to figure 1 The arrangement and processing of the radiation imaging system 1000 according to this embodiment are described. figure 1 is a block diagram showing an example of the arrangement of a radiation imaging system including the radiation imaging apparatus of this embodiment. The radiation imaging system is used to capture radiation images in, for example, a hospital, and includes a radiation imaging device 1001, an imaging control device 1002, a radiation source 1003,...

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Abstract

This radiation imaging system includes: a detection unit for detecting the dose of radiation irradiated from a radiation source; a first processing unit for outputting a first stop signal when dose information, acquired on the basis of first processing of the detection result, exceeds a threshold; a second processing unit for outputting a second stop signal when dose information acquired on the basis of second processing of a signal subjected to the first processing exceeds a threshold; and a control unit for controlling the radiation source to stop irradiation of radiation on the basis of thefirst stop signal or the second stop signal.

Description

technical field [0001] The present invention relates to a radiation imaging device, a radiation imaging system, a radiation imaging method and a program. Background technique [0002] A radiation imaging device including a matrix substrate including a switch such as a TFT (Thin Film Transistor) and a photoelectric conversion element has been put into practice as a radiation imaging device for medical image diagnosis and non-destructive inspection. The pixel array obtained by converting elements. As an example of a multifunctional radiation imaging device, PTL1 discloses an arrangement in which an analog signal is input from a radiation receiving section such as a phototimer to a dose control unit of a radiation generating device as a radiation imaging system for performing dose control of radiation , and performs dose control such that the dose control unit stops irradiation of radiation when the integrated value of the analog signal exceeds a predetermined threshold. [0...

Claims

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Application Information

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IPC IPC(8): A61B6/00
CPCA61B6/4233A61B6/4283A61B6/469A61B6/50A61B6/54A61B6/542A61B6/545A61B6/56H04N5/32H05G1/56H04N25/53G01T1/247G01T1/2928H05G1/44
Inventor 田村敏和
Owner CANON KK
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