超过20%的碳-13极化酸使用可逆交换与和旋锁诱导交叉在50μT的可逆交换
Andreas B Schmidt1,2,3, James Eills4, Laurynas Dagys5
1Division of Medical Physics, Department of Radiology, Medical Center, Faculty of Medicine, University of Freiburg, Killianstraße 5a, Freiburg 79106, Germany.
The journal of physical chemistry letters
|June 2, 2023
概括
超极化碳-13酸盐是一种用于分子成像的新对比剂,通过可逆交换 (SABRE) 信号放大有效地准备. 这种方法可以实现长时间的两极分化,使得癌症的先进诊断成为可能.
科学领域:
- 磁共振成像技术 磁共振成像技术
- 医学物理 医学物理
- 生物化学 生物化学
背景情况:
- 碳-13高极化pyruvate是分子磁共振成像 (MRI) 的下一代有希望的对比剂.
- 目前的超极化方法在临床翻译的效率和速度方面面临挑战.
- 分子MRI为早期癌症检测和疾病监测提供了潜力.
研究的目的:
- 开发一种高效,快速的方法,使用可逆交换信号放大 (SABRE) 来超极化碳-13酸盐.
- 为了研究基板化和微粒磁场对酸盐极化和寿命的影响.
- 评估这种方法的可行性,以准备在体内应用的超极化探头.
主要方法:
- 使用信号放大通过可逆交换 (SABRE) 与对用于pyruvate超极化.
- 采用了基板化,交替和静态微特斯拉磁场的协同使用.
- 在C1和C2核站点测量了碳-13极化水平和纵向放松时间 (T1).
主要成果:
- 在C1和C2位点分别达到高达22%和6%的长期13C极化.
- 证明的超长极化寿命 (T1 = 3.7 ± 0.25 分钟对于C1,T1 = 1.7 ± 0.1 分钟对于C2).
- 在微特斯拉场上观察到有利的放松动态,有助于高极化水平和延长寿命.
结论:
- 使用SABRE在优化的磁场条件下,可以实现碳-13酸盐的高效和快速超极化.
- 持久的极化寿命适用于探头净化,质量保证和随后的体内成像.
- 这种方法代表了超极化pyruvate用于分子MRI的临床翻译的重要一步.
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