Beam shaping body with rotating target body

Abstract

The invention discloses a beam shaping body with a rotating target body, which comprises a proton beam duct, a rotating target, a moderator, a reflector surrounding the moderator and the proton beam duct, a thermal neutron absorption layer adjacent to the moderator, a gamma shielding layer adjacent to the thermal neutron absorption layer, and a collimator arranged in the beam shaping body, the device is characterized in that a target body container used for installing a rotating target is further arranged in the beam shaping body, and the target body container is communicated with the proton beam flow hole channel and arranged in the reflector and the moderator; the rotating target comprises a rotating shaft and a target body fixed at the end of the rotating shaft, and the target body is detachably mounted in the target body container and arranged at the tail end of the proton beam duct. The target body container is arranged in the moderation body and the reflector, and the depth of the target body penetrating into the moderation body is not less than 50mm, so that recoil neutrons can be sufficiently moderated, and the epithermal neutron flux of an outlet is also improved.

Description

technical field [0001] The invention relates to the technical field of BNCT boron neutron capture therapy, in particular to a beam shaping body for deep tumor treatment. Background technique [0002] At present, photon or charged particle therapy is limited by the nature of the radiation. While killing tumor cells, it will also cause great damage to normal tissues in the area where the radiation passes. Moreover, for multilineage glioblastoma and melanoma Such highly radiation-resistant tumor cells are often ineffective by traditional radiation therapy. The neutron capture therapy, which has less radiation damage to normal tissues around the tumor and has a high relative biological effect in the target area, relies on the specific accumulation of boron-containing drugs in tumor cells, and cooperates with precisely regulated neutron beams to provide more radiation than traditional radiation. Better cancer treatment options. [0003] Boron Neutron Capture Therapy (BNCT) uses...

AI Technical Summary

Problems solved by technology

[0006] (1) The retarder is a cone-shaped moderator formed in one piece. The moderator with this structure is not conducive to processing and manufacturing, and the neutron flux after moderation cannot meet the effect of treating deep tumors;

[0007] (2) The proton incident pipe is hollow cylindrical, and the hollow cylindrical channel tends to make more neutrons leak from this area, the utilization rate is not high, and it will also cause harm to the accelerator end

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