US 12,274,570 B2
Radiation imaging system, imaging control apparatus, radiation imaging apparatus, radiation imaging method, and non-transitory computer readable storage medium
Toshikazu Tamura, Tochigi (JP)
Assigned to CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Oct. 31, 2022, as Appl. No. 17/977,270.
Application 17/977,270 is a continuation of application No. PCT/JP2021/017263, filed on Apr. 30, 2021.
Claims priority of application No. 2020-086046 (JP), filed on May 15, 2020.
Prior Publication US 2023/0049588 A1, Feb. 16, 2023
Int. Cl. A61B 6/42 (2024.01); A61B 6/46 (2024.01)
CPC A61B 6/4208 (2013.01) [A61B 6/461 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A radiation imaging system comprising a radiation imaging apparatus and an imaging control apparatus, the radiation imaging apparatus including a dose detection pixel that detects a dose of radiation irradiated from a radiation source, and the imaging control apparatus controlling the radiation imaging apparatus, wherein before radiation imaging, the imaging control apparatus:
specifies a position of the dose detection pixel in a region of interest for calculating a dose indicator value of a radiation image, determines a threshold according to the position of the dose detection pixel, and transmits the position of the dose detection pixel and the threshold to the radiation imaging apparatus,
the radiation imaging apparatus:
makes a setting of the position of the dose detection pixel in the region of interest and the threshold transmitted from the imaging control apparatus, and performs imaging based on the setting, and
the imaging control apparatus:
sets the threshold so that a deviation between the dose indicator value calculated by using pixel value of the radiation image and a dose target value determined as the threshold is reduced.