脏剂量限制的临床考虑,以减轻辐射诱导的淋巴缺血症
Yifu Ma1,2,3, Shuying Zhang4, Jiayan Ma5
1PRaG Therapy Center, Center for Cancer Diagnosis and Treatment, The Second Affiliated Hospital of Soochow University, Suzhou, China.
Cancer medicine
|January 22, 2026
概括
放射治疗可能导致严重的淋巴缺血,影响患者的预后. 在治疗期间限制脏V5剂量和改善RT后的淋巴细胞恢复对于胃癌患者的更好的结果至关重要.
科学领域:
- 辐射瘤学 辐射瘤学
- 医学物理 医学物理
- 血液学 血液学 血液学
背景情况:
- 在腹部放射治疗期间淋巴缺血的脏剂量-体积值方面缺乏共识.
- 以前的研究表明脏剂量与淋巴缺血之间存在相关性,但最终的值仍未确定.
- 在放射治疗期间调查动态淋巴细胞变化和脏剂量对于了解患者预后至关重要.
研究的目的:
- 为了研究胃癌放射治疗 (RT) 期间淋巴细胞计数的动态变化.
- 为了确定与淋巴衰竭相关的脏剂量值.
- 检查这些因素对患者预后的影响.
主要方法:
- 在RT之前,期间和之后从胃癌患者收集绝对淋巴细胞计数 (ALC).
- 使用淋巴细胞恢复指数 (LRI) 评估淋巴细胞恢复,并评估脏剂量参数.
- 采用后勤和考克斯回归分析来确定脏剂量和淋巴细胞状态对淋巴缺血和预后的影响.
主要成果:
- 在RT后观察到ALC中位数显著下降85.71%,其中30.2%患有4级淋巴缺血症.
- 只有12.6%的患者在RT后120天内出现ALC恢复.
- 骨V5剂量与4级淋巴缺血和整体预后有显著的相关性,具体限制可能会使死亡风险降低60.9%.
结论:
- 在RT期间严重的淋巴细胞下降和RT后不充分的恢复与较差的患者预后有关.
- 在RT期间预防严重的淋巴缺血和加强RT后的淋巴细胞恢复至关重要.
- 限制脏V5剂量是缓解淋巴缺血和改善结果的关键策略.
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