| CPC A61B 6/548 (2013.01) [A61B 6/56 (2013.01)] | 12 Claims |

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1. A radiation irradiation device comprising:
a device main body that emits radiation;
a remote operation unit that is capable of remotely operating the device main body and is attachable to and detachable from the device main body; and
a processor that is configured to:
detect an attachment/detachment state of the remote operation unit with respect to the device main body; and
execute a control of an operation of the device main body according to the detected attachment/detachment state.
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