Radiation detection apparatus and output method
A radiation detection apparatus includes an obtaining unit configured to obtain information representing a setting of a target region that is a target of automatic exposure control, and information representing a radiation transmission characteristic of an object corresponding to the target region, a setting unit configured to set a candidate region based on the target region, a monitoring unit configured to monitor a radiation dose during incidence in the candidate region, a specifying unit configured to specify, as a detection region, a region where the monitored radiation dose falls within a range determined in accordance with the radiation transmission characteristic, and an output unit configured to output the radiation dose monitored in the detection region.
1. A radiation detection apparatus, comprising:
a setting unit configured to set a candidate region where radiation dose is detected;
a specifying unit configured, when radiation irradiation is started, to specify a detection region by using the radiation dose irradiating into the candidate region and a range determined in accordance with a radiation transmission characteristic of an object's target part; and
an output unit configured to output a signal related to a stop of the radiation irradiation using the radiation dose monitored in the detection region, wherein
the radiation transmission characteristic indicates a relative relationship between a radiation transmission characteristic of the target part and a radiation transmission characteristic of a region around the target part.
2. The radiation detection apparatus according to claim 1 , wherein the setting unit is configured to set the candidate region including at least a part of the target region and at least a part of a region outside the target region.
3. The radiation detection apparatus according to claim 1 , wherein the specifying unit is configured to specify the detection region using a function representing radiation doses at a plurality of positions in the candidate region.
4. The radiation detection apparatus according to claim 3 , wherein the specifying unit is configured to specify the detection region including a position where a differential value of the function is zero.
5. The radiation detection apparatus according to claim 1 , wherein the specifying unit is configured to specify the detection region using a function representing radiation doses at a plurality of positions in a first direction in the candidate region and a function representing radiation doses at a plurality of positions in a second direction in the candidate region.
6. The radiation detection apparatus according to claim 1 , wherein in a case where a plurality of target regions exist, the setting unit is configured to set an individual candidate region for each target region.
7. The radiation detection apparatus according to claim 1 , wherein in a case where a plurality of target regions exist, the setting unit is configured to set one candidate region for the plurality of target regions.
8. The radiation detection apparatus according to claim 1 , wherein in a case where the detection region cannot be specified to satisfy a predetermined condition, the setting unit is configured to set the candidate region again.
9. The radiation detection apparatus according to claim 8 , wherein the predetermined condition includes existence of a position where a differential value of the function representing the radiation doses at a plurality of positions in the candidate region is zero.
10. The radiation detection apparatus according to claim 1 , wherein the signal related to the radiation dose is a signal to stop radiation irradiation.
11. The radiation detection apparatus according to claim 1 , wherein the setting unit sets the candidate region by using imaging settings obtained by user's instructions.
12. A radiation detection system, comprising:
the radiation detection apparatus according to claim 1 ; and
a control apparatus configured to control the radiation detection apparatus, wherein
the control apparatus is communicatively connected to the radiation detection apparatus.
13. A control method by a radiation detection apparatus, the method comprising:
setting a candidate region where radiation dose is detected;
when radiation irradiation is started, specifying a detection region by using the radiation dose irradiating into the candidate region and a range determined by the radiation detection apparatus in accordance with a radiation transmission characteristic of an object's target part; and
outputting a signal related to a stop of the radiation irradiation using the radiation dose monitored in the detection region, wherein
the radiation transmission characteristic indicates a relative relationship between a radiation transmission characteristic of the target part and a radiation transmission characteristic of a region around the target part.
14. A non-transitory computer-readable storage medium storing a program for causing a computer to execute the control method according to claim 13 .