Multi-blade collimator of ray accelerator treatment head and tumor radiotherapy equipment

Abstract

The invention discloses a multi-blade collimator of a ray accelerator treatment head. The multi-blade collimator comprises a tank body which is arranged in a multi-layer manner, wherein openings whichpenetrate through the tank body are formed in the upper surface and the lower surface of each layer of the tank body; all the openings are coaxially formed and are used for enabling rays to penetrate; a plurality of vertical blades are arranged in each layer of the tank body; the blades are divided into two groups, and are respectively arranged on two ends of the tank body; the front ends of every two groups of the blades in the horizontal direction are opposite and are located at the corresponding opening; a driver is independently connected to the rear end in the horizontal direction of each blade; the blades in each group are sequentially arrayed, and the side surfaces of the blades are attached to each other; and a right angle beveling is arranged at the front end edge of the side surface of each blade. Through the adoption of the multi-blade collimator disclosed by the invention, multi-blade collimator can be more effectively attached to the edge of the tumor, so that better radiation field shape adapting effect is realized, radiation field shape adapting resolution is increased, ray radiation leakage is reduced, and radiation field transformation efficiency is improved. Theinvention also discloses tumor radiotherapy equipment comprising the multi-blade collimator of the ray accelerator treatment head.

Description

technical field [0001] The invention relates to the field of medical equipment, in particular to a multi-leaf collimator for a treatment head of a ray accelerator. In addition, the present invention also relates to a tumor radiotherapy equipment comprising the multi-leaf collimator of the ray accelerator treatment head. Background technique [0002] Tumor radiotherapy equipment treats tumors with high-energy rays, which has the advantages of high efficiency and precision. The main component of tumor radiotherapy equipment is a ray accelerator treatment head, which accelerates electrons through the accelerator to output high-energy rays, and irradiates the tumor for treatment. At the same time, ray radiation will also affect the body. In order to prevent radiation leakage, a multi-leaf collimator needs to be installed to form an irradiation hole that matches the shape of the tumor. . [0003] The multi-leaf collimator is a radiation collimation device composed of multiple b...

AI Technical Summary

Problems solved by technology

This method is difficult to process due to the thin thickness of the blades of the tungsten alloy material, and the structural strength becomes low, easy to deform, and is limited by the layout of the micro-motor structure, and this structure is prone to radiation leakage in the gap between adjacent blades

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