Patent ID: 8637832
Filing Date: 2014-01-28
Classification: G01T,H04N

Abstract:
1. A radiographic image detector comprising: an imaging device having an imaging area, in which pixels for generating electric signals corresponding to radioactive rays incident thereon are arrayed in a matrix and signal lines for reading out the electric signals from the pixels are provided, to detect an image of a subject from radioactive rays which are incident on the imaging area after penetrating the subject; a plurality of detective elements arranged in the imaging area, the detective elements outputting electric signals corresponding to radioactive rays incident thereon; a storage device storing previously stored sensitivity data on the detective elements for selecting at least a high-sensitivity element from among the detective elements; a radiation detecting device for detecting at least one of the start of radiation and the end of radiation of radioactive rays toward the imaging area by monitoring the electric signal output from the high-sensitivity element selected on the basis of the sensitivity data; and a control device for controlling operation of the imaging device on the basis of results of detection by the radiation detecting device.