Patent ID: 8953742
Filing Date: 2015-02-10
Classification: A61B,H04N

Abstract:
1. A radiation image detection device comprising: a radiation image detector having a plurality of pixels arranged thereon, the radiation image detector performing accumulation operation, each pixel detecting radiation emitted from a radiation source to accumulate signal charge in the accumulation operation; an irradiation sensor for detecting the radiation; an irradiation detecting section for detecting a start of irradiation of the radiation based on a signal from the irradiation sensor; a noise sensor; and a control section for enabling or disabling the irradiation detecting section based on a signal from the noise sensor, wherein the control section includes a noise detecting section for detecting magnitude of the signal from the noise sensor, and the noise detecting section outputs a first signal to the control section when the magnitude of the signal from the noise sensor is greater than or equal to a first threshold value, and the control section disables the irradiation detecting section when the first signal is inputted from the noise detecting section, and wherein the irradiation detecting section outputs a second signal to the control section when magnitude of the signal from the irradiation sensor is greater than or equal to a second threshold value, and the second signal represents the start of the irradiation of the radiation, and the control section enables the irradiation detecting section to allow the radiation image detector to perform the accumulation operation when the second signal is inputted to the control section from the irradiation detecting section and the first signal is not inputted to the control section from the noise detecting section.