Abstract: A radiation-irradiation device includes a leg unit, a radiation source unit, an arm unit that supports the radiation source unit, and a body unit that is an arm support unit supporting the arm unit. Further, radiation-irradiation device includes a cradle that supports one edge portion of a radiation detector detecting radiation and having the shape of a rectangular flat plate and is mounted on the body unit so as to be movable between a first position at which the radiation detector (80) is held along a flat surface of the body unit and a second position at which at least an opposite edge portion of the radiation detector opposite to the one edge portion of the radiation detector is held at a position away from the body unit.

Abstract: A radiation-irradiation device includes a leg unit, a radiation source unit, an arm unit, a body unit, and a raising/lowering mechanism. The arm unit includes a first arm connected to the radiation source unit, a second arm, a first rotational moving portion that connects the first arm to the second arm so as to allow the first arm and second arm to be rotationally movable relative to each other, and a second rotational moving portion that connects the second arm to the raising/lowering mechanism so as to allow the second arm to be rotationally movable relative to the raising/lowering mechanism. The rotation of the second arm from an initial rotational movement position is regulated by the body unit in a case in which the arm unit is positioned at a position other than a first position where the arm unit is raised or lowered by the raising/lowering mechanism.

Abstract: A radiation-irradiation device includes a leg unit, a radiation source unit, an arm unit, a body unit, and a raising/lowering mechanism. The arm unit includes a first arm connected to the radiation source unit, a second arm, a first rotational moving portion that connects the first arm to the second arm so as to allow the first and second arms to be rotationally movable relative to each other, and a second rotational moving portion that connects the second arm to the raising/lowering mechanism so as to allow the second arm to be rotationally movable relative to the raising/lowering mechanism. The rotation of the second arm from an initial rotational movement position is regulated by the body unit in a case in which the arm unit is positioned at a position other than a first position where the arm unit is raised or lowered by the raising/lowering mechanism.

Abstract: A radiation-irradiation device includes a leg unit, a radiation source unit, an arm unit that supports the radiation source unit, and a body unit that is an arm support unit supporting the arm unit. Further, radiation-irradiation device includes a cradle that supports one edge portion of a radiation detector detecting radiation and having the shape of a rectangular flat plate and is mounted on the body unit so as to be movable between a first position at which the radiation detector (80) is held along a flat surface of the body unit and a second position at which at least an opposite edge portion of the radiation detector opposite to the one edge portion of the radiation detector is held at a position away from the body unit.