Neutron capture therapy system

Abstract

The application provides a neutron capture therapy system comprising a beam shaping body. The beam shaping body comprises a beam entrance, a neutron production part arranged inside the beam shaping body, a retarding body adjacent to the neutron generation part, a reflecting body surrounding the retarding body, and a beam exit. Neutrons are produced through nuclear reaction of the neutron production part with proton beams going into the beam entrance. The retarding body retards the neutrons produced by the neutron production part. The reflecting body guides the deviated neutrons to the retarding body to improve the strength of epithermal neutron beams. The beam shaping body comprises at least one moving part capable of moving toward or away from the neutron production part. The at least one moving part has a first position and a second position, and moves between the first position and the second position. When the at least one moving part is in the first position, the neutron production part can be replaced; and when the at least one moving part is in the second position, the neutron production part cannot be replaced. The neutron production part is easy to replace. The neutron capture therapy system has a simple structure, and is flexible to use.

Description

technical field [0001] The present invention relates to a neutron capture therapy system, in particular to a neutron capture therapy system capable of replacing a neutron generating part. 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 t...

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Problems solved by technology

[0005] However, most of the accelerator boron neutron capture therapy retarders in the prior art are cylinders, and the neutron generating part is usually arranged in the retarder at a certain depth. When the neutron generating part is damaged and needs to be replaced, more measures must be taken. disassemble it in one step, which makes it difficult to replace the neutron generating part.

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