用99mTc-DMSA和99mTc-Glucoheptonate脏光学测量功能差异的平面和三维方法的比较
Meriem Aouane1, Yasser Foufa2, Anthony Ciarallo1
1Department of Nuclear Medicine, Centre Hospitalier de l'Université de Montréal, Montreal, Québec, Canada.
Journal of nuclear medicine technology
|December 9, 2025
概括
使用SPECT对功能差异 (DRF) 的体积测量评估是可靠的,但与平面方法有很大的不同. 这一发现在99mTc-glucoheptonate中比在99mTc-DMSA膜扫描中更明显.
科学领域:
- 核医学是一种核医学.
- 放射学 放射学是一门学科.
- 医学成像分析分析 医学成像分析
背景情况:
- 差异性功能 (DRF) 对于评估健康至关重要.
- 传统的平面脏光学扫描使用几何平均值来计算DRF.
- 通过SPECT进行体积测量评估为DRF测量提供了3D方法.
研究的目的:
- 为了比较使用体积SPECT与传统平面评估的DRF计算的等价性.
- 评估SPECT方法对DRF的可靠性和可重复性.
- 为了评估通过两种方法获得的DRF值的差异,使用不同的辐射追踪器.
主要方法:
- 对108名接受脏扫描的患者进行了回顾性分析.
- 使用3D SPECT体积分析和2D平面成像与几何平均值进行DRF测量.
- 用平面和SPECT方法获得的DRF值的比较,使用对联的Student t测试.
- 使用类内相关系数评估内部观察者和观察者之间的可靠性.
主要成果:
- 在99mTc-glucoheptonate (最大差异为40.0%) 和99mTc-DMSA (最大差异为13.0%) 的平面和SPECT方法之间发现了DRF值的显著差异.
- 对于方法和辐射追踪器,都实现了高的观察者内部和观察者间可靠性 (ICC > 0.9).
- SPECT量化显示出出色的可靠性,与99mTc-DMSA相比,99mTc-glucoheptonate的差异较大.
结论:
- 对于DRF评估的SPECT体积方法是可靠的,因为观察者之间存在很高的一致性.
- 在SPECT体积和平面DRF量化方法之间存在显著差异.
- 放射性追踪剂的选择 (99mTc-glucoheptonate与99mTc-DMSA) 影响了两种量化方法之间观察到的DRF差异的大小.
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