A grid ridge filter for particle therapy and method of installation
By employing a perforated grid-like structure for the grid-shaped ridge filter, and utilizing the alternating arrangement of inclined elongated channels and solid areas, the problems of substrate scattering and high processing difficulty in existing technologies are solved, thereby improving the efficiency of particle therapy and protecting tissues.
CN122399261APending Publication Date: 2026-07-17SHANGHAI INSTITUTE OF APPLIED PHYSICS CHINESE ACADEMY OF SCIENCES
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SHANGHAI INSTITUTE OF APPLIED PHYSICS CHINESE ACADEMY OF SCIENCES
- Filing Date
- 2026-04-29
- Publication Date
- 2026-07-17
AI Technical Summary
Technical Problem
In existing particle therapy systems, ridge filters suffer from problems such as introducing additional scattering from the substrate, high processing difficulty, poor radiation resistance of materials, and high manufacturing costs, which affect treatment efficiency.
Method used
The grid-ridge filter with a hollow grid structure achieves differentiated attenuation of particle beam energy by alternating inclined elongated slots and solid areas, thus broadening the Bragg peak and reducing the number of energy switching times.
Benefits of technology
It effectively broadens the Bragg peak, reduces the number of energy switching cycles, improves treatment efficiency, reduces processing difficulty and manufacturing costs, enhances mechanical stability, and protects normal tissues.
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Figure CN122399261A_ABST
Abstract
本发明提供一种用于粒子治疗的栅式脊形过滤器及安装方法，包括至少一个镂空栅式结构，镂空栅式结构包括多个沿预设方向间隔设置的长条形的通槽，所述镂空栅式结构的通槽与实体区域交替排列以形成无基底支撑层的栅状框架；所述镂空栅式结构在使用时相对于束流方向倾斜布置，使得入射粒子束穿过不同厚度的所述实体区域，通过厚度差异实现对束流能量的差异化衰减，以展宽布拉格峰。本发明针对性解决现有脊形过滤器因基层材料引入额外散射、核心结构加工难度大、制造成本高的技术问题，调制束流能量，提升粒子治疗的效率。
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