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功能性肺避开放射治疗的自动规划基于功能引导光束角度选择和计划优化.

Tianyu Xiong1, Guangping Zeng1, Zhi Chen1

  • 1Department of Health Technology and Informatics, The Hong Kong Polytechnic University, Hong Kong Special Administrative Region of China, People's Republic of China.

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概括
此摘要是机器生成的。

功能性肺避开放射治疗 (AP-FLART) 的新自动规划框架有效地将辐射剂量从高功能的肺部重定向到低功能的肺部. 这种方法确保了高质量的治疗计划,改善了肺节省和患者的结果.

关键词:
自动规划的自动化规划灯束角度的选择.功能性肺部回避放射治疗.计划优化计划的优化

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科学领域:

  • 辐射瘤学 辐射瘤学
  • 医学物理 医学物理
  • 放射治疗规划 放射治疗规划

背景情况:

  • 肺癌放射治疗需要精确的剂量输送,以尽量减少对健康肺组织的损伤.
  • 功能性肺避开放射治疗 (FLART) 旨在节省功能性肺部区域,但手动规划是复杂和耗时的.
  • 现有的方法缺乏将肺功能纳入放射治疗计划的自动化解决方案.

研究的目的:

  • 开发和评估功能性肺避开放射治疗 (AP-FLART) 的全自动规划框架.
  • 整合肺功能信息,使剂量从高功能肺 (HFL) 转向低功能肺 (LFL).
  • 评估AP-FLART在生成基于轮 (cFLART) 和基于voxel (vFLART) 的计划中的有效性.

主要方法:

  • 开发AP-FLART集成基于剂量计分数的光束角度选择和元优化计划优化.
  • 从SPECT输液扫描中集成的肺功能数据用于剂量重定向指导.
  • 将AP-FLART应用于18例肺癌患者,生成常规RT (ConvRT),cFLART和vFLART计划,以与手动和自动ConvRT计划进行比较.

主要成果:

  • 自动ConvRT计划与手动计划的质量相匹配.
  • 与自动ConvRT相比,cFLART计划显著降低了HFL平均剂量 (1.13 Gy),V20 (2.01%) 和V5 (6.66%) 的平均剂量.
  • 与自动ConvRT相比,vFLART计划显示肺功能加权平均剂量 (0.64 Gy),fV20 (0.90%) 和fV5 (5.07%) 降低,满足所有剂量约束.

结论:

  • 在不影响传统剂量指标的情况下,AP-FLART有效地将辐射剂量从HFL重定向到LFL.
  • 该框架产生高质量,无劳动力和一致的FLART计划.
  • 通过自动化,精确的治疗计划,AP-FLART有可能推进FLART研究和临床应用.