在部分乳房照射中同时提供综合增强的技术可行性
Alex Burton1,2,3,4, Tamika Cassar2, Christy Glenn2
1Department of Physical Sciences, Peter MacCallum Cancer Centre, Melbourne, Victoria 3000, Australia.
Physics and imaging in radiation oncology
|November 11, 2024
概括
对于部分乳房照射 (PBI) 与同时集成增强 (SIB) 的体积调制弧线疗法 (VMAT) 是可行的. 这种技术允许针对瘤床的辐射,而不会增加周围器官的剂量,从而简化治疗.
科学领域:
- 辐射瘤学 辐射瘤学
- 医学物理 医学物理
背景情况:
- 部分乳腺照射 (PBI) 是早期乳腺癌全乳腺照射的替代方案.
- 卷度调制弧线疗法 (VMAT) 提供精确的辐射输送.
- 同时综合增强 (SIB) 允许在相同的治疗分数内将剂量升级到瘤床.
研究的目的:
- 为了研究VMAT对PBI的可行性,将SIB纳入瘤床.
- 为了评估不同的分成方案,有和没有SIB.
主要方法:
- 为接受PBI的10名患者创建了4个VMAT计划.
- 计划包括两个分离表:30 Gy/5分数和40.05 Gy/15分数.
- 每个计划都被评估,并没有对瘤床的同时综合增强 (SIB).
主要成果:
- 在5-分量手臂中,SIB减少了与均剂量相比,对乳房的Ipsilateral剂量.
- 在15分数组中,SIB与均剂量相比,与目标体积的非劣质一致性.
- 增加SIB并没有增加风险或计划复杂性的器官的剂量.
结论:
- 与SIB一起的VMAT PBI是两种被调查的分化方案的可行治疗选择.
- SIB允许剂量升级到瘤床,同时保持可接受的剂量分配和计划复杂性.
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