Anti-radiation conformable material and preparation method thereof

Abstract

The invention discloses an anti-radiation conformable material and a preparation method thereof. The anti-radiation conformable material is prepared by uniformly mixing heavy metal powder and a polymer elastic thermoplastic material within a melt temperature range of the polymer elastic thermoplastic material and then being pressed into a plate-like structure. The anti-radiation conformable material has good anti-radiation performance and low bremsstrahlung, is environment-friendly and pollution-free, is convenient to prepare and process, and can replace the traditional anti-radiation plate inclinic, such as a low melting point lead plate, thereby solving a difficult problem in electron line conformal radiotherapy which has not been solved for a long time.

Description

technical field [0001] The invention relates to the technical field of conformal radiotherapy equipment, in particular to a radiation-proof conformable material and a preparation method thereof. Background technique [0002] In the process of clinical electron beam radiation therapy, in order to protect vital organs or normal tissues from radiation damage, a suitable radiation field is generally formed on the radiation-proof material according to the specific shape of the patient's lesion, which is called conformal radiation therapy. [0003] The radiation-proof conformable material commonly used in clinic at present is low-melting-point lead alloy (commonly called low-melting-point lead). The preparation method of low-melting-point lead is to melt lead and tin in proportion, then add bismuth and cadmium for fusion, and form a low-melting-point lead alloy material after cooling. When making conformable materials, it is necessary to melt the lead alloy material again and cast...

AI Technical Summary

Problems solved by technology

The United States and Japan proposed several material composition schemes to replace low-melting lead, but they still failed to solve the problem of high bremsstrahlung radiation, as well as the problems of inconvenient preparation and processing, so they have not been applied clinically.

There is also research in this area in China, but because the proposed schemes all adopt multi-layer composite structures, objectively making their preparation and processing complicated and difficult to operate

Moreover, these programs are still in the laboratory stage and cannot be applied clinically at all.

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