Beam shaping body used for boron neutron capture therapy

Abstract

The invention provides a beam shaping body used for boron neutron capture therapy. The boron neutron capture therapy comprises an acceleration tube used for accelerating a proton beam. The beam shaping body comprises a beam inlet, a target material disposed in the acceleration tube, a retarder body adjacent to the target material, a reflection body disposed on the outer part of the retarder body in an encircled manner, a thermal neutron absorption body adjacent to the retarder body, a radiation shielding disposed in the beam shaping body, and a beam outlet. The beam shaping body is also provided with a cooling device. The cooling device comprises a first cooling part used for cooling the target material; a second cooling part and a third cooling part, which are extended along the axial direction of the acceleration tube, and are communicated with the first cooling part. The first cooling part is in a plane contact with the target material, and the second cooling part is used to input a cooling medium in the first cooling part, and the third cooling part is used to output the cooling medium in the first cooling part. The beam shaping body used for the boron neutron capture therapy is advantageous in that the cooling device is used for cooling the target material, and a structure is simple, and assembly is easy.

Description

technical field [0001] The invention relates to a beam shaping body, in particular to a beam shaping body for neutron capture therapy. Background technique [0002] With the development of atomic science, radiation therapy such as cobalt 60, linear accelerator, and electron beam has become one of the main means of cancer treatment. However, traditional photon or electron therapy is limited by the physical conditions of the radiation itself. While killing tumor cells, it will also cause damage to a large number of normal tissues along the beam path; in addition, due to the different sensitivity of tumor cells to radiation, traditional radiation therapy Treatment for more radioresistant malignant tumors (eg glioblastoma multiforme, melanoma) is often less effective. [0003] In order to reduce radiation damage to normal tissues around the tumor, the concept of target therapy in chemotherapy (chemotherapy) has been applied to radiation therapy; and for tumor cells with high ra...

AI Technical Summary

Problems solved by technology

[0004] In the accelerator boron neutron capture therapy, the accelerator boron neutron capture therapy accelerates the proton beam through the accelerator, and the proton beam is accelerated to an energy sufficient to overcome the Coulomb repulsion of the nucleus of the target material, and undergoes a nuclear reaction with the target material to generate neutrons, Therefore, in the process of generating neutrons, the target will be irradiated by a very high-energy level of accelerated proton beams, and the temperature of the target will rise significantly, thereby affecting the service life of the target.

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