从动态O-水对人类的PET图像进行血流量定量的分区建模:系统性审查
1Turku PET Centre, University of Turku and Turku University Hospital, Turku, Finland. ormrai@utu.fi.
Annals of nuclear medicine
|January 20, 2025
概括
本综述系统地分析了53项使用氧-15水PET和隔间建模对血液流量量化的研究. 它强调了方法和单位的不一致性,特别是在大脑和瘤血流估计方面.
科学领域:
- 核医学和医学成像.
- 生理学和生物物理学.
背景情况:
- 动态正子发射断层扫描 (PET) 能够使用区间建模进行非侵入性血流估计.
- 氧-15水 (O-15水) 是一种适合用于血液流量量化的PET标记物,因为它具有自由扩散性.
- 新兴的全身PET扫描仪扩大了O-15水PET血液流量量化的应用.
研究的目的:
- 系统地审查和总结现有的血液流量量化研究,通过使用O-15水PET的隔间建模来进行量化.
- 在53篇发表的文章中比较方法,数据处理和结果.
- 确定器官特异性血流量定量方面的不一致性和未来研究领域.
主要方法:
- 系统的文献综述53篇关于用隔间建模量化血流量的文章.
- 根据器官对研究进行分类:大脑,心肌,,肺,胰腺,肝,肌肉和瘤.
- 分区模型的分析,校正 (动脉血液体积,非可 perfusable 组织,溢出,时间延迟) 和数据预处理技术.
主要成果:
- 在研究中大脑和瘤血流估计的显著变化,可能是由于模型差异或人口特征.
- 与脑和瘤血流相比,心肌血流估计的变化较小.
- 对于血流估计,即使没有体重或密度参数,也观察到不一致的单位 (mL/min/g vs. mL/min/mL).
结论:
- 方法的变化和研究种群有助于广泛的血液流量估计,特别是在大脑和瘤.
- 鼓励对单位进行标准化,并进一步研究血液流量的性别和年龄差异.
- 建议将O-15水PET血流量定量扩展到大脑和心脏以外的器官,如脏,肺和肝脏.
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