US 11,874,409 B2
Correction X-ray detector, X-ray CT apparatus, and detector element determining method
Akira Nishijima, Nasushiobara (JP); Koichi Miyama, Otawara (JP); and Yasuo Saito, Nasushiobara (JP)
Assigned to CANON MEDICAL SYSTEMS CORPORATION, Otawara (JP)
Filed by CANON MEDICAL SYSTEMS CORPORATION, Otawara (JP)
Filed on Jun. 29, 2021, as Appl. No. 17/304,951.
Claims priority of application No. 2020-116571 (JP), filed on Jul. 6, 2020; and application No. 2021-089839 (JP), filed on May 28, 2021.
Prior Publication US 2022/0003881 A1, Jan. 6, 2022
Int. Cl. G01T 1/164 (2006.01); G21K 1/02 (2006.01); A61B 6/03 (2006.01)
CPC G01T 1/1648 (2013.01) [A61B 6/03 (2013.01); G21K 1/02 (2013.01)] 16 Claims
OG exemplary drawing
 
1. An X-ray computed tomography (CT) apparatus, comprising:
a main detector for imaging;
a correction X-ray detector including a plurality of detector elements configured to detect X-rays, wherein the plurality of detector elements were originally manufactured for use in the main detector but were rendered not usable for the main detector because a defective detector element is included therein; and
processing circuitry configured to
acquire a plurality of output values respectively corresponding to the plurality of detector elements; and
determine detector elements to be used in generating correction data based on the plurality of output values.