Water phantom type dose distribution determining apparatus
AssigneeSumitomo Heavy Industries, Ltd.
InventorsToru Kan, Hideki Nonaka
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Abstract
A sensor is inserted into a closed water tank filled with water to the brim and the closed water tank is fixed directly to a radiation beam irradiating section, and the sensor is moved freely with respect to a mounted frame used for fixation. Therefore, a rapid and accurate prediction of the actual dose distribution of radiation beam prior to radiation therapy can be conducted, even when the irradiating section is attached to a rotation gantry.
Claims7
A water phantom type dose distribution determining apparatus for determining the dose distribution in water in a radiation beam irradiated from an irradiating section using a sensor placed in water, comprising:
- a closed water tank filled with water to brim and having the sensor inserted thereinto;
- a mount means to attach the closed water tank to the irradiation section, the irradiation section being located outside of the closed water tank;
- a moving means to move at least the sensor with respect to the mount means wherein the distance between the water surface and the sensor can be adjusted by the moving means.
A water phantom type dose distribution determining apparatus for determining the dose distribution in water of a radiation beam irradiated from an irradiating section using a sensor placed in water, comprising:
- a closed water tank filled with water to brim and having the sensor inserted thereinto;
- a mount means to attach the closed water tank to the irradiation section, the irradiation section being located outside of the closed water tank;
- a moving means to move at least the sensor with respect to the mount means;
- wherein the moving means moves the sensor together with the closed water tank in directions vertical to the radiation direction of the radiation beam, and moves the sensor alone in directions in parallel with the radiation direction of the radiation beam.
Dependencies are inferred from the claim text.