Structural Design and Penumbra Analysis of Dynamic Multi-leaf Collimator Leaf End.
10.3969/j.issn.1671-7104.2023.04.005
- Author:
Jun LYU
1
;
Liuli CHEN
2
;
Ruijun WEN
2
;
Pengcheng LONG
2
;
Leiming SHANG
2
;
Liqin HU
2
Author Information
1. Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, 230031.
2. SuperAccuracy Science & Technology Co. Ltd., Nanjing, 210044.
- Publication Type:Journal Article
- Keywords:
leakage rate;
multi-leaf collimator;
penumbra;
radiotherapy
- MeSH:
Humans;
Radiotherapy Planning, Computer-Assisted/methods*;
Particle Accelerators;
Neoplasms;
Radiotherapy Dosage
- From:
Chinese Journal of Medical Instrumentation
2023;47(4):377-382
- CountryChina
- Language:Chinese
-
Abstract:
Dynamic multi-leaf collimator, which has the function of radiation beam shaping, is a key executive component of tumor precise radiotherapy, and plays a core role in improving the accuracy, efficiency and quality of radiotherapy. A new type of collimator leaf end structure with circular arc and plane combination was studied, and collimator penumbra performance analysis model combining analytical expression and graphic analysis was developed. The influence of leaf end structure on penumbra was analyzed quantitatively, and a set of three-dimensional structure design of dynamic multi-leaf collimator was completed. The feasibility of the structural design and analysis model was verified through experimental measurements.
