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在放射治疗中,轮辅助工具. 平滑:一个虚假的朋友
Jordi Marruecos Querol1,2,3, Diego Jurado-Bruggeman4,5, Anna Lopez-Vidal6
1Radiation Oncology Department, Catalan Institute of Oncology, Girona, Spain. jmarruecos@iconcologia.net.
概括
ARIA系统的光滑工具可以减少放射治疗的轮工件. 然而,增加光滑降低了体积准确度,需要仔细审查由此产生的患者治疗计划.
科学领域:
- 医学物理 医学物理
- 辐射瘤学 辐射瘤学
- 图像处理 图像处理
背景情况:
- 精确的瘤划定对于有效的放射治疗计划至关重要.
- 放射治疗中的手动轮可以引入几何文物.
- 该ARIA系统提供了工具来改进划分卷.
研究的目的:
- 为了评估ARIA系统的平滑工具的性能.
- 评估光滑对体积一致性和精度的影响.
- 为了确定放射治疗轮的最佳光滑参数.
主要方法:
- 在ARIA v15.6.6.中的11个几何形状和两个临床卷的划线.
- 在各种等级 (1-20) 上应用平滑工具 (2D-ALL vs 3D).
- 对体积变化,质量中心和DICE相似系数的分析.
主要成果:
- 2D-ALL和3D光滑之间没有显著差异.
- 质量中心偏差是最小的 (0-0.45厘米).
- 增加的光滑导致体积和DICE指数下降,复杂形状的差异. 临床应用建议在最大体积 (PTV) 上单次光滑应用.
结论:
- 平滑工具有效地减少了放射治疗中手动划分的工件.
- 仔细审查光滑卷是保持准确性的必要.
- 建议谨慎使用光滑,以尽量减少治疗计划中的错误.
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