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来自PRRT后SPECT/CT的定量指数:在神经内分泌瘤中早期成像生物标志物的探索性方法

Takanori Bando¹, Hideki Otsuka², Tamaki Otani³

¹Department of Radiological Technology, Tokushima University Hospital, Tokushima, Japan.

Japanese journal of radiology

|January 14, 2026

概括

像SUV和MTV这样的定量SPECT/CT指标可以在Lu-DOTATATE治疗后评估神经内分泌瘤 (NET) 治疗反应. 这些定量指数的早期下降可能预测治疗成功.

科学领域:

核医学是一种核医学.
放射学放射学是一门学科.
在瘤学瘤学.

背景情况:

神经内分泌瘤 (NETs) 需要有效的治疗监测.
-DOTATATE受体放射性核酸疗法 (PRRT) 是对NETs的关键治疗方法.
对PRRT反应的客观评估对于患者管理至关重要.

研究的目的:

评估定量SPECT/CT指标 (SUV,MTV,TLuU) 以评估NET患者在Lu-DOTATATE PRRT后的治疗反应.
根据这些定量指数开发一个响应分类系统.

主要方法:

在7名接受四次Lu-DOTATATE PRRT的NET患者中,对31个病变进行了回顾性分析.
在每个周期后进行视觉评估 (克伦宁分数) 和定量分析 (SUVmax,SUVpeak,MTV,TLuU).
兴趣体积 (VOI) 分段使用40%的SUVmax或固定2.4切割值进行纵向评估.

主要成果:

SUVmax和SUVpeak与Krenning分数相关,并且在值方法中一致.
一个固定的SUV切断线提供了更稳定的纵向MTV和TLuU评估.
早期基于SUV的响应比率减少预测了持续的治疗下降,与视觉和CT发现保持一致.

结论:

定量性PRRT后SPECT/CT为NET治疗反应评估提供了客观和可重复的指标.
标准化的体积测量评估可以使用固定SUV切断线来实现.
早期的定量指数下降可能作为治疗疗效的预测生物标志物,使个性化治疗学成为可能.

关键词:

177 - 酸盐 - 酸盐神经内分泌瘤 (NETs) 是一种受体放射性核素疗法 (PRRT) 是一种治疗方法.量化指数是指量化指数.标准化的吸收值 (SUV)热浪学是什么意思热浪学

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