Patent ID: 7113565

Claim:
A radiological imaging system for forming radiographic images, comprising: a radiation source; and a radiological imaging device including, a radiation detection unit having a plurality of photoelectric converters arrayed in a matrix-like formation for the purpose of detecting and converting radiation originated from said radiation source into electrical signals, a read-out unit operatively connected to said radiation detection unit for reading the electrical signals output by said radiation detection unit, and a signal processing unit operatively connected to said read-out unit for processing the electrical signals read out by the read-out unit, wherein said signal processing unit performs a first read-out operation, in which the radiation detection unit is operated with applying the radiation originated from said radiation source, and a second read-out operation, in which the radiation detection unit is operated without applying the radiation selectively, and performs said second read-out operation at least twice, avenging the results of said second read-out operation so as to obtain an average signal value thereof, and subtracting said average signal value from a signal value obtained by said first read-out operation so as to obtain a processed image.