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使用集成的PET-MRI同时进行N-氨和加多 perfusion:冠状动脉微血管功能障碍的诊断准确性
Runze Wen1, Qiang Xie1, Bo Pan1
1Department of Nuclear Medicine, First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, China.
Frontiers in medicine
|September 17, 2025
概括
使用心脏MRI进行冠状动脉流量储备 (CFR) 测量显示,冠状动脉微血管功能障碍 (CMD) 的患者与13N-氨PET有很好的一致性. 虽然MRI通过CFR准确检测CMD,但肌肉心脏血流量量化需要进一步细化.
科学领域:
- 心血管成像 - 心血管成像
- 医学物理 医学物理
背景情况:
- 使用正电子发射断层扫描 (PET) 绝对量化心肌 perfusion 和冠状动脉流量储备 (CFR) 是宝贵的诊断冠状动脉微血管功能障碍 (CMD).
- 之前的研究没有直接比较使用集成PET-MRI的CMD患者的磁共振成像 (MRI) 和PET perfusion成像.
研究的目的:
- 用MRI对同步13N-氨PET作为参考标准来评估心脏 perfusion 测量的定量准确性.
- 在一个完全集成的PET-MRI扫描仪中评估MRI的性能,用于CMD评估.
主要方法:
- 三十名怀疑患有CMD的患者同时接受了MRI和13N-氨PET扫描,在休息和压力期间.
- 相关性和布兰德-阿尔特曼分析用于比较MRI和PET衍生的心肌血流量 (MBF) 和CFR值.
主要成果:
- 通过MRI进行的全球休息和压力MBF测量显示了与PET的中等相关性 (r=0.50和r=0.49).
- 全球和区域CFR测量显示MRI和PET之间的良好一致性和中度至强相关性 (r=0.64和r=0.48).
- 通过MRI推导的CFR实现了检测CMD的AUC为0.85,准确度与PET相比.
结论:
- CFR测量在MRI和13N-氨PET之间是一致的,对于检测显著的CMD,准确度相似.
- 虽然定量MRI显示CFR的临床实用性,但休息和压力MBF测量需要进一步细化,以改善与PET的一致性.
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