Patent ID: 7038214
Filing Date: 2006-05-02
Classification: A61B,G01T

Abstract:
1. A radiological image pickup apparatus comprising: a radiation detector including a common electrode formed on one side of a semiconductor layer sensitive to radiation and a plurality of split electrodes formed on the other side of the semiconductor layer, said radiation detector taking out charges occurring in the semiconductor layer with incidence of radiation as an electric signal from each of the split electrodes and detecting the spatial distribution of the incident radiation; an electric signal processing circuit for performing signal processing of the taken-out electric signal in response to a gain setup value and also enabling an increase or a decrease in the gain setup value; an image processing circuit for creating a radiological image based on the electric signal subjected to signal processing by said electric signal processing circuit; a light application section for applying light to the spilt electrode formation side of the semiconductor layer; and a light strength control section for controlling said light application section so as to increase or decrease the strength of applied light in response to a decrease or an increase in the gain setup value of said electric signal processing circuit.