Patent ID: 6904126
Filing Date: 2005-06-07
Classification: A61B,G01N

Abstract:
1. A radiological imaging apparatus for forming X-ray images, comprising: a radiation detection unit composed of a plurality of photoelectric converters arrayed in a matrix-like formation for the purpose of detecting and converting radiation from an irradiated subject into electrical signals; a drive control unit operatively connected to said radiation detection unit for the purpose of controlling movement of said radiation detection unit; 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 and said drive control unit for processing the electrical signals read out by the read-out unit, said signal processing unit selecting between a first read-out operation, in which the radiation detection unit is operated with irradiation of a subject, and a second read-out operation, in which the radiation detection unit is operated without irradiation of the subject, said signal processing unit further performing said second read-out operation at least twice, averaging 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.