公开(公告)号：EP4094691A1

公开(公告)日：2022-11-30

申请号：EP21764403.8

申请日：2021-03-01

申请人： Canon Kabushiki Kaisha

发明人： TAYA, Takanori ,  TAMURA, Toshikazu ,  TORII, Sota ,  OJIMA, Tetsunori ,  FUJIYOSHI, Kentaro

IPC分类号： A61B6/00

摘要： A radiation imaging system comprises a sensor unit of a radiation imaging device 120, detecting an incident radiation R irradiated from a radiation generator 110; an arithmetic unit 132 calculating an accumulated dose of the radiation detected by the sensor unit; and an imaging control unit outputting an irradiation stop signal for stopping the irradiation of the radiation R to the radiation generator 110 when the accumulated dose reaches a threshold or more, wherein the imaging control unit 133 sets the threshold based on a dose rate of the radiation R determined based on a relationship between the accumulated dose and a time, and a delay time from a time of outputting the irradiation stop signal to a time of stopping the irradiation of the radiation of the radiation generator 110.