在接受放射治疗的肝细胞癌患者中,用于风险分层的功能性肝脏成像和剂量测量:验证研究
Joseph Tsai1, Clemens Grassberger1, Matthew J Nyflot2
1Department of Radiation Oncology, University of Washington / Fred Hutchinson Cancer Center, Seattle, WA, USA.
概括
来自SC-SPECT/CT扫描的功能性肝脏成像指标可以预测接受放射治疗 (RT) 的肝细胞癌 (HCC) 患者的结果. 这些经过验证的模型有助于个性化RT,以减轻肝脏毒性并改善患者的生存率.
科学领域:
- 核医学是一种核医学.
- 辐射瘤学 辐射瘤学
- 肝细胞癌 (HCC) 管理管理
背景情况:
- 肝细胞癌 (HCC) 的个性化管理可以通过功能性肝脏成像来增强,以减轻与放射治疗 (RT) 相关的肝毒性风险.
- 功能性肝脏成像和剂量参数的验证对于HCC患者的准确风险分层至关重要.
研究的目的:
- 验证功能性肝脏成像指标和剂量参数,以在HCC患者的扩大队列中进行风险分层.
- 为整体生存 (OS) 开发可靠的预测模型,并预测在RT之后,Child-Pugh得分 (CP+2) 的显著增加.
主要方法:
- 对109名HCC患者进行回顾性审查,这些患者接受了硫化物 (SC) -SPECT/CT扫描,用于RT规划.
- 提取功能性肝脏成像指标并应用弹性网多变量Cox模型与嵌套交叉验证.
- 测试折叠患者的风险分层和依赖时间的模型性能的表征,使用ROC分析来建立预后截止值.
主要成果:
- 交叉验证模型一致性为OS的0.70和CP+2.6的0.67.
- 关键的预测OS包括瘤体积,CP-score,肝-GTVV20和功能性肝体积 (FLV) V20.
- CP+2的关键预测因素包括肝功能总量 (TLF),肝-GTV平均剂量和CP-score,定义了2年OS和1年CP+2的最佳分层.
结论:
- 来自SC-SPECT/CT的功能性肝脏指标,结合临床和剂量计因素,形成HCC的强有力的结果预测模型.
- 临床试验是必要的,以测试个性化的RT规划策略,旨在保护HCC患者的肝功能.
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