Comparison of dose distributions calculated by two optimization methods of Monaco system used in volumetric modulated arc therapy of esophageal cancer(PDF)
《中国医学物理学杂志》[ISSN:1005-202X/CN:44-1351/R]
- Issue:
- 2018年第7期
- Page:
- 745-748
- Research Field:
- 医学放射物理
- Publishing date:
Info
- Title:
- Comparison of dose distributions calculated by two optimization methods of Monaco system used in volumetric modulated arc therapy of esophageal cancer
- Author(s):
- XIE Hongliang; HU Can; CAO Yangsen; YU Chunshan; SUN Yongjian; LIU Yongming; ZHANG Huojun
- Department of Radiation Oncology, Shanghai Changhai Hospital, Shanghai 200433, China
- Keywords:
- ; esophageal cancer; volumetric modulated arc therapy; treatment planning system; radiotherapy dose
- PACS:
- R735.1；R811.1
- DOI:
- DOI:10.3969/j.issn.1005-202X.2018.07.001
- Abstract:
- Objective To compare the dosimetric differences in volumetric modulated arc therapy (VMAT) of esophageal cancer after Pareto optimization or Constrained optimization of Monaco treatment planning system. Methods The clinical information of 23 patients with esophageal cancer was retrospectively analyzed. With the same optimization parameters, the Pareto and Constrained optimization models of Monaco treatment planning system were used to optimize VMAT plans and perform dose verification. After optimization, the differences in target dose, conformity index, homogeneity index, organs-at-risk dose, segments and monitor units were compared. Results The differences between two optimized plans in the target dose, conformity index, homogeneity index, and organs-at-risk dose were trivial, without statistical significance (P>0.05). Conclusion Both Pareto and Constrained optimization models of Monaco treatment planning system for the optimization of VMAT plan of esophageal cancer can achieve a good dose distribution and is clinically applicable.
Last Update: 2018-07-24