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在门状细胞癌的MRI反应评估的最佳时间

Bettina A Hanekamp^1,2, Ellen Viktil^1,2, Johann Baptist Dormagen²

¹Institute of Clinical Medicine, University of Oslo, 0318 Oslo, Norway.

|March 2, 2026

概括

对门癌 (SCCA) 的最佳MRI反应评估是在治疗后24周. 这种定时改善了局部区域治疗失败 (LRTF) 的诊断准确性,并利用了联合MRI瘤回归等级 (comrTRG).

科学领域:

在瘤学瘤学.
放射学放射学是一门学科.
医疗成像医学成像

背景情况:

化疗放射治疗 (CRT) 是对门状细胞癌 (SCCA) 的标准治疗方法.
准确评估治疗反应对于患者的管理和预后至关重要.
目前在SCCA中对CRT后反应评估的MRI时间缺乏标准化.

研究的目的:

在SCCA中确定CRT后基于MRI的响应评估的最佳时间点.
为了评估MRI的诊断准确性,使用组合的T2+扩散权重MRI瘤回归等级 (comrTRG).
评估MRI的预测值 (PPV,NPV) 以检测局部区域治疗失败 (LRTF).

主要方法:

追溯诊断准确性研究包括127名在2013-2017年期间接受治疗的SCCA患者.
治疗后的MRI扫描在6,12和24周 (6w,12w,24w) 用comrTRG进行了分析.
临床结果作为LRTF检测的参考标准.

主要成果:

随着时间的推移,放射性完整反应率 (comrTRG1) 显著增加 (6w: 27%, 12w: 66%, 24w: 75%).
对LRTF检测的MRI的积极预测值 (PPV) 在24周内大大改善 (6w: 33%, 12w: 46%, 24w: 88%).
在所有时间点中,负预测值 (NPV) 始终保持高 (>90%).

结论:

对SCCA反应的MRI评估在CRT后24周最可靠,减少了不确定的结果和不必要的救援手术.
综合MRI瘤回归度 (comrTRG) 是评估SCCA治疗反应的实用工具.
量身定制的随访,可能包括频繁的MRI扫描,可能对高风险患者有益.

关键词:

门癌症是一种门癌症.化学疗法或放射治疗扩散磁共振成像技术的使用.响应评估响应评估响应评估治疗失败的治疗失败.

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