Radiation imaging system, radiation control apparatus, control method of radiation imaging system, control method of radiation control apparatus, and non-transitory computer-readable storage medium
A radiation imaging system comprising a radiation imaging apparatus configured to detect radiation emitted from a radiation source, and a radiation control apparatus configured to control the radiation source is provided. The radiation imaging apparatus is configured to output dose information, which includes a dose of radiation entering the radiation imaging apparatus and a time at which the dose was detected, to the radiation control apparatus a plurality of times. The radiation control apparatus is configured to set the threshold dose based on a difference between a time included in the dose information from the radiation imaging apparatus and a time at which the radiation control apparatus received the dose information, and control the radiation source to stop radiation irradiation based on the threshold dose.
1. A radiation imaging system comprising:
a radiation imaging apparatus configured to detect radiation emitted from a radiation source; and
a radiation control apparatus configured to control the radiation source, wherein
the radiation imaging apparatus is configured to output dose information, which includes a dose of radiation entering the radiation imaging apparatus and a time at which the dose was detected, to the radiation control apparatus a plurality of times, and
the radiation control apparatus is configured to
set a threshold dose based on a difference between a time included in the dose information from the radiation imaging apparatus and a time at which the radiation control apparatus received the dose information, and
control the radiation source to stop radiation irradiation based on the threshold dose.
2. The system according to claim 1 , wherein
the radiation control apparatus is configured to specify, based on the dose information, a threshold time at which an arrival dose entering the radiation imaging apparatus reaches the threshold dose.
3. The system according to claim 1 , wherein
the radiation control apparatus is configured to set the threshold dose based on a difference between a time included in one piece of dose information among a plurality of pieces of the dose information and a time at which the radiation control apparatus acquired the one piece of dose information.
4. The system according to claim 1 , wherein
the radiation control apparatus is configured to set the threshold dose based on differences between times included in two or more pieces of dose information among a plurality of pieces of the dose information and times at which the radiation control apparatus acquired the two or more pieces of dose information, respectively.
5. The system according to claim 1 , wherein
if the difference exceeds a predetermined threshold, the radiation control apparatus is configured to set the threshold dose.
6. The system according to claim 1 , wherein
the radiation control apparatus is configured to set the threshold dose based on dose information, among a plurality of pieces of the dose information, acquired at a preset timing.
7. The system according to claim 1 , wherein
the radiation control apparatus is configured to set the threshold dose based on dose information, among a plurality of pieces of the dose information, acquired at a timing at which a predetermined period has elapsed since the threshold dose was last changed.
8. The system according to claim 2 , wherein
if the arrival dose reaches the threshold dose or if a time reaches the threshold time, the radiation control apparatus is configured to control the radiation source to stop radiation irradiation.
9. The system according to claim 2 , wherein
based on the dose information and the threshold time, the radiation control apparatus is configured to transmit a signal which causes the radiation source to stop radiation irradiation.
10. The system according to claim 9 , wherein
based on a time from when the signal is transmitted to when the radiation source stops radiation irradiation, the radiation control apparatus is configured to set at least one of the threshold dose or the threshold time.
11. The system according to claim 10 , wherein
the radiation control apparatus and the radiation source are configured to be capable of communication by wired communication.
12. The system according to claim 1 , wherein
the radiation imaging apparatus and the radiation control apparatus are configured to be capable of communication by wireless communication.
13. The system according to claim 1 , further comprising
a synchronizer configured to synchronize a time of the radiation imaging apparatus and a time of the radiation control apparatus.
14. The system according to claim 13 , wherein
the synchronizer is configured to synchronize the time of the radiation imaging apparatus and the time of the radiation control apparatus by wired communication or wireless communication.
15. The system according to claim 13 , wherein
the synchronizer is configured to synchronize the time of the radiation imaging apparatus and the time of the radiation control apparatus before radiation is emitted.
16. A radiation control apparatus that controls a radiation source configured to emit radiation to a radiation imaging apparatus, the radiation control apparatus comprising:
one or more memories; and
one or more processors that are configured to cooperate with the one or more memories to
set a threshold dose based on a difference between a time included in dose information from the radiation imaging apparatus and a time at which the radiation control apparatus received the dose information, and
control the radiation source to stop radiation irradiation based on the threshold dose.
17. A control method of a radiation imaging system comprising a radiation imaging apparatus configured to detect radiation emitted from a radiation source, and a radiation control apparatus configured to control the radiation source, the method comprising:
causing the radiation imaging apparatus to output dose information, which includes a dose of radiation entering the radiation imaging apparatus and a time at which the dose was detected, to the radiation control apparatus;
causing the radiation control apparatus to set a threshold dose based on a difference between a time included in the dose information from the radiation imaging apparatus and a time at which the radiation control apparatus received the dose information; and
causing the radiation control apparatus to control the radiation source to stop radiation irradiation based on the threshold dose.
18. A control method of a radiation control apparatus that controls a radiation source configured to emit radiation to a radiation imaging apparatus, the method comprising:
setting a threshold dose based on a difference between a time included in the dose information from the radiation imaging apparatus and a time at which the radiation control apparatus recived the dose information; and
controlling the radiation source to stop radiation irradiation based on the threshold dose.
19. A non-transitory computer-readable storage medium storing a program for causing a computer to execute a control method of a radiation imaging system comprising a radiation imaging apparatus configured to detect radiation emitted from a radiation source, and a radiation control apparatus configured to control the radiation source, the method comprising:
causing the radiation imaging apparatus to output dose information, which includes a dose of radiation entering the radiation imaging apparatus and a time at which the dose was detected, to the radiation control apparatus;
causing the radiation control apparatus to set a threshold dose based on a difference between a time included in the dose information from the radiation imaging apparatus and a time at which the radiation control apparatus received the dose information; and
causing the radiation control apparatus to control the radiation source to stop radiation irradiation based on the threshold dose.
20. A non-transitory computer-readable storage medium storing a program for causing a computer to execute a control method of a radiation control apparatus that controls a radiation source configured to emit radiation to a radiation imaging apparatus, the method comprising:
setting a threshold dose based on a difference between a time included in dose information from the radiation imaging apparatus and a time at which the radiation control apparatus recived the dose information; and
controlling the radiation source to stop radiation irradiation based on the threshold dose.