Patent ID: 9140809
Filing Date: 2015-09-22
Classification: A61B,G01T,G03B

Abstract:
1. A radiation detecting apparatus comprising: a radiation detector including a scintillator for converting radiation that has passed through a subject into visible light, and a substantially cuboid shaped photoelectric transducer board for converting the visible light into radiographic image information; and a casing housing the radiation detector therein, wherein the casing is of a substantially cuboid shape and includes an upper plate, a lower plate, and a side plate interconnecting the upper plate and the lower plate; and the side plate has a recess defined therein, which faces and is spaced from a corner of the photoelectric transducer board, the recess being concave in a direction away from the corner, wherein the recess comprises a cavity, which is concave as viewed in plan and as viewed in vertical cross section; if the corner of the photoelectric transducer board is displaced toward the cavity in order to bring two adjacent sides of the photoelectric transducer board into contact with respective inner wall surfaces of the side plate on both sides of the cavity, then the corner between the two adjacent sides is spaced from a bottom of the cavity by a minimum distance in a range from 1 mm to 5 mm, the cavity is defined between a first surface, which is closer to the upper plate, and a second surface, which is closer to the lower plate, the photoelectric transducer board has a surface facing the upper plate and spaced from the first surface by a minimum distance d the radiation detecting apparatus further comprises: a first base plate disposed between the upper plate and the photoelectric transducer board and supporting the radiation detector thereon, wherein the scintillator is disposed on a surface of the photoelectric transducer board, which is remote from the first base plate, and the first base plate has a thickness ta, the photoelectric transducer board has a thickness tb, the scintillator has a thickness tc, and the cavity has a height ha along a thickness direction of the photoelectric transducer board, the thicknesses ta, tb, tc and the height ha being related to each other by the inequality tb <ha <(ta+tb +tc).