在没有外部偏振器的情况下,在现场进行快速的碳-13超极化和酸盐和酸盐的成像
Obaid Mohiuddin1, Henri de Maissin1,2, Andrey N Pravdivtsev3
1Division of Medical Physics, Department of Diagnostic and Interventional Radiology, University Medical Center Freiburg, Faculty of Medicine, University of Freiburg, Killianstr. 5a, 79106, Freiburg, Germany.
Communications chemistry
|October 24, 2024
概括
这项研究表明,使用通过侧臂化 (PHIP-SAH) 进行偏诱导偏的13C核磁共振剂的快速,内孔超极化. 这通过提高超极化13CMRI的可访问性和吞吐量来推进实时代谢成像.
科学领域:
- 磁共振成像技术 磁共振成像技术
- 代谢成像 - 代谢成像
- 超极化技术 超极化技术
背景情况:
- 超极化13C核磁共振能够实时可视化体内代谢过程.
- 目前准备超极化剂的方法可能耗时,需要专门的设备.
- 对于更广泛的临床应用,需要更容易获得和更有效的超极化技术.
研究的目的:
- 为了在MRI系统中实现高13C极化,用于关键的超极化剂前体.
- 开发一种与MRI扫描仪兼容的快速和紧的超极化系统.
- 通过使用开发的系统,证明在位13C核磁共振成像的次秒可行性.
主要方法:
- 通过侧臂化 (PHIP-SAH) 的前体,利用乙烯基作为不和的偏诱导的偏.
- 采用了一种新的极化设置,以在高温和高压下在乙-d6中进行快速侧臂化.
- 优化了超极化过程,在不到10秒的时间内实现极化.
- 应用了先进的脉冲序列,以提高极化转移效率.
主要成果:
- 达到了高的13C极化水平 (P13C ≈28%在80mM为[1-13C]乙酸和P13C ≈19%在10mM为[1-13C]酸乙烯).
- 证明了以二分之一秒的13C磁力共振成像 (MRI) 基因[1-13C]pyruvate-d6.6.
- 超极化系统具有很小的足迹,允许磁体内定位.
- 在有效的侧臂裂解和水溶剂溶液净化方面仍然存在挑战.
结论:
- 开发的系统可以在MRI系统内直接对代谢物前体进行高效和快速的13C超极化.
- 这种方法显著提高了超极化13CMRI的可访问性和吞吐量.
- 对于例行临床翻译,需要进一步优化极化后处理.
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