Weight adaption-based spread-out Bragg peak method(PDF)
《中国医学物理学杂志》[ISSN:1005-202X/CN:44-1351/R]
- Issue:
- 2019年第1期
- Page:
- 50-54
- Research Field:
- 医学放射物理
- Publishing date:
Info
- Title:
- Weight adaption-based spread-out Bragg peak method
- Author(s):
- WANG Jinlong1; L. ALBERTO Cruz 1; LIU Zhengzheng1; LEI Hai2; WEI Yao1; ZHANG Wei3; PENG Sheng1
- 1. NewRT Corporation Ltd., Wuxi 214021, China; 2. School of Physics, Nanjing University, Nanjing 210093, China; 3. National Supercomputing Center in Wuxi, Wuxi 214021, China
- Keywords:
- ; Keywords: spread-out Bragg peak; proton therapy; Monte Carlo simulation; FLUKA; weight adaption
- PACS:
- R312
- DOI:
- DOI:10.3969/j.issn.1005-202X.2019.01.010
- Abstract:
- Abstract: Objective To develop a spread-out Bragg peak (SOBP) method using weight adaption for obtaining a smooth spread-out Bragg peak. Methods By refitting the proton rang-energy relation (Geiger’s law), the adaptation function was obtained, and the weight was re-adjusted. The smooth SOBP was obtained by finding the sensitive parameter k, and finally the proposed method was verified by Monte Carlo code FLUKA. Results The shape of SOBP was more sensitive to the parameter k than parameter P. A SOBP of 4-32 cm was obtained, and the deviation in the middle flat region was no more than ±2%, which solved the problem of collapse in the middle region. Conclusion The effectiveness of SOBP method based on weight adaptation is verified with Monte Carlo simulation.
Last Update: 2019-01-24