利用技术和标准化的机构实践来缓解乳腺癌辐射治疗中的差异
Jacob F Oyeniyi1, Bailey A Loving1, Muayad F Almahariq1
1Department of Radiation Oncology, Corewell Health William Beaumont University Hospital, Royal Oak, MI, USA.
Cancer causes & control : CCC
|March 20, 2025
概括
乳腺癌治疗中的种族差异可以通过使用先进的技术来减少,例如在左侧放射治疗期间使用主动呼吸协调器 (ABC). 这些工具的统一采用确保了所有患者群体的类似心脏剂量.
科学领域:
- 辐射瘤学 辐射瘤学
- 医学物理 医学物理
- 癌症的差异 癌症的差异
背景情况:
- 乳腺癌治疗和治疗结果的种族差异已经得到了充分的证据.
- 之前的研究表明,在接受左侧乳房照射的黑人和少数民族妇女中,心脏平均剂量 (MHD) 较高,导致心脏事件增加.
- 这项研究旨在评估我们机构的MHD,并评估技术干预是否可以缓解种族差异.
研究的目的:
- 在接受左侧乳房/胸壁照射的患者中评估心脏平均剂量 (MHD).
- 调查包括特定技术在内的机构措施对缓解MHD种族差异的影响.
- 确定现有技术是否可以在不同种族群体中等同心脏剂量测量.
主要方法:
- 对509名接受左侧乳房/胸壁辐射治疗的女性患者进行了回顾性分析.
- 收集的数据包括心脏剂量测量,使用深呼吸呼吸 (DIBH) 技术,如主动呼吸协调器 (ABC),乳腺大小,内部乳腺节点 (IMN) 辐射,以及遵守治疗计划约束 (登机证要求) 和同行评审.
- 统计分析包括Kruskal-Wallis测试用于种族组比较和单变量/多变量回归分析 (UVA/MVA) 来评估影响MHD的因素.
主要成果:
- 平均心脏剂量 (MHD) 在种族群体中是相似的 (黑人: 1.38 Gy,白人: 1.35 Gy,其他: 1.39 Gy; p=0.6).
- 与黑人 (75%) 和其他种族群体 (62%) 相比,白人患者 (83%) 的活跃呼吸协调器 (ABC) 使用率更高 (p=0.005).
- 乳房的中位数大小在各组之间有显著差异 (黑色: 1904 cc,白色: 1504 cc,其他: 1331 cc; p=0.001).
- 多变量分析显示,MHD受内部乳腺节点 (IMN) 辐射,增强治疗和ABC使用的影响,但不受种族或乳腺大小的影响.
结论:
- 实现跨种族群体相似的心脏剂量是可行的,即使有像乳房大小这样的解剖学变化.
- 统一使用ABC等技术,标准化治疗约束和同行评审是缓解差异的关键.
- 需要进一步的研究,以了解导致心脏病发病的因素,尽管在种族群体中心脏剂量是相似的.
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