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高部仰卧姿势,以减少小肠暴露在妇科放射治疗中
Chao Li1,2, You-Ping Xiao3, Lin Huang4
1College of Clinical Medicine for Oncology, Fujian Medical University, Fujian, China.
Radiation oncology (London, England)
|September 28, 2024
概括
一个新的高部仰卧姿势显著减少小肠 (SB) 在妇科癌症治疗期间的辐射暴露. 这种方法可以提高患者的舒适度,并最大限度地减少辐射的SB体积,而不需要膀膨胀.
科学领域:
- 辐射瘤学 辐射瘤学
- 医学物理 医学物理
- 妇科瘤学 妇科瘤学
背景情况:
- 尽量减少对小肠 (SB) 的辐射暴露在妇科瘤的盆腔放射治疗中至关重要,以减少毒性.
- 标准的仰卧位置可能会导致骨盆治疗体内显著的SB辐射.
研究的目的:
- 评估一种新型高部仰卧定位技术在为妇科恶性瘤接受强度调节放射治疗 (IMRT) 的患者降低SB辐射剂量的有效性.
- 评估这种定位对盆腔内SB体积的影响.
主要方法:
- 一项前性研究涉及76名接受妇科瘤IMRT的妇女.
- 用真空袋和热塑性件将患者固定起来.
- 试验组 (n=36) 采用高部姿势,用神圣泡枕,而对照组 (n=40) 使用标准的仰卧姿势.
- 小肠 (SB) 在CT扫描上从阴茎交叉体到阴茎分叉体被划分出来.
主要成果:
- 高部位置显著降低了盆腔内的平均SB体积 (399.17厘米对547.48厘米,p<0.001).
- 在试验组与对照组相比,在所有剂量级别 (10Gy至45Gy) 中观察到绝对辐射SB体积的统计学显著减少.
- 在试验组中,SB和膀体积之间的相关性并不显著,与对照组不同.
结论:
- 高部仰卧姿势是减少患有妇科瘤的患者SB辐射暴露的有效方法.
- 这种技术最大限度地减少了辐射的SB体积,而不需要膀膨胀,提高了患者的舒适度,并可能减少与治疗相关的副作用.
- 描述的定位策略显示了在各种瘤类型的盆腔放射治疗中更广泛应用的希望.
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