Abstract: In a magnetic material detection device comprising: at least two magnetic sensors; and a control device detecting a magnetic material by using output values of the magnetic sensors, the magnetic sensors are arranged at an interval of a predetermined distance from each other such that a subject is located outside a space therebetween, and the control device detects the magnetic material by comparing time change amounts of output values of the magnetic sensors resulting from a change in relative position between the subject and each of the magnetic sensors, with utilizing that an absolute value of the time change amount becomes larger in one of the magnetic sensors close to the subject as compared to another of the magnetic sensors far from the subject.

Abstract: A boron neutron capture therapy system has a neutron beam irradiation device, a patient restraint/placement portion, a three-dimensional diagnostic device, an irradiation table, a position adjustment mechanism, and a control unit. The boron neutron capture therapy system performs position determination with a sufficient degree of accuracy at the time of the boron neutron capture therapy. Further, the control unit, using the movement of the irradiation table, performs collision avoidance processing that changes the movement of the irradiation table before the patient restrained on the patient restraint/placement portion receives injury by colliding with the irradiation port, and thus, collision between the patient and the irradiation port can be avoided.

Abstract: In a magnetic material detection device comprising: at least two magnetic sensors; and a control device detecting a magnetic material by using output values of the magnetic sensors, the magnetic sensors are arranged at an interval of a predetermined distance from each other such that a subject is located outside a space therebetween, and the control device detects the magnetic material by comparing time change amounts of output values of the magnetic sensors resulting from a change in relative position between the subject and each of the magnetic sensors, with utilizing that an absolute value of the time change amount becomes larger in one of the magnetic sensors close to the subject as compared to another of the magnetic sensors far from the subject.

Abstract: A boron neutron capture therapy system has a neutron beam irradiation device, a patient restraint/placement portion, a three-dimensional diagnostic device, an irradiation table, a position adjustment mechanism, and a control unit. The boron neutron capture therapy system performs position determination with a sufficient degree of accuracy at the time of the boron neutron capture therapy. Further, the control unit, using the movement of the irradiation table, performs collision avoidance processing that changes the movement of the irradiation table before the patient restrained on the patient restraint/placement portion receives injury by colliding with the irradiation port, and thus, collision between the patient and the irradiation port can be avoided.