Abstract: A measurement device includes a sensing portion and a measuring portion. The sensing portion contains at least a fluorescent material whose emitting of fluorescent light ceases due to an action of a radioactive beam. The measuring portion measures a radiation quantity of the radioactive beam, with which the sensing portion is irradiated, based on an amount of decrease in the intensity of the fluorescent light emitted by the fluorescent material contained in the sensing portion when the radioactive beam acts on at least a portion of the fluorescent material. The fluorescent light is emitted due to irradiation of the fluorescent material by an excitation source.

Abstract: A measurement device includes a sensing portion and a measuring portion. The sensing portion contains at least a fluorescent material whose emitting of fluorescent light ceases due to an action of a radioactive beam. The measuring portion measures a radiation quantity of the radioactive beam, with which the sensing portion is irradiated, based on an amount of decrease in the intensity of the fluorescent light emitted by the fluorescent material contained in the sensing portion when the radioactive beam acts on at least a portion of the fluorescent material. The fluorescent light is emitted due to irradiation of the fluorescent material by an excitation source.

Abstract: A fixing-tool mounting device mounting a fixing tool including a curved surface formed in accordance with a shape of a body surface on a body part of a subject onto the body part of the subject set to a predetermined posture angle, including: a moving mechanism moving the fixing tool in at least one axial direction relative to the body of the subject; an angle adjustment mechanism adjusting an angle of the fixing tool around at least one axis relative to the body of the subject; and a pressure detecting portion configured to, after the fixing tool contacts with the body part of the subject, detect a pressure generated between the fixing tool and the body part.

Abstract: A holding device wherein: a holding tool including a curved and rigid surface formed in accordance with a shape of a body surface of a body part of a subject along with an adhesive layer having adhesiveness to a skin surface of the subject on the curved and rigid surface side; an elongated arm member having one end portion to which the holding tool is attached; and a fixing tool for fixing the arm member to a fixed object, attached to an end portion of the arm member on the side opposite to the end portion on the side to which the holding tool is attached.