在3T时通过CEST MRI绘制大脑的肌酸映射
Kexin Wang1,2, Jianpan Huang3, Licheng Ju1,4
1F.M. Kirby Research Center for Functional Brain Imaging, Kennedy Krieger Research Institute, Baltimore, Maryland, USA.
Magnetic resonance in medicine
|October 10, 2023
概括
这项研究表明,在3T使用瓜尼迪诺 (Guan) 质子共振时,在大脑中绘制肌酸 (Cr) 地图是可行的. 这种技术显示出检测细胞内pH和Cr度的潜力.
科学领域:
- 神经成像是一种神经成像.
- 生物化学 生物化学
- 磁共振成像技术 磁共振成像技术
背景情况:
- 肌酸 (Cr) 在细胞能量平衡中起着至关重要的作用.
- 准确地绘制大脑Cr度的地图对于理解神经疾病至关重要.
- 目前在体内定量Cr的方法有局限性.
研究的目的:
- 评估在3特斯拉 (3T) 时使用瓜尼迪诺 (瓜恩) 质子共振在大脑中绘制肌酸 (Cr) 的可行性.
- 调查Cr和蛋白质对GuanCEST信号的贡献.
- 评估GuanCEST在细胞内pH测绘方面的潜力.
主要方法:
- 使用了野生类型和淘汰赛小鼠,具有改变的Cr度.
- 应用了Bloch-McConnell的两步拟合来量化Cr质子的交换率.
- 模拟了GuanCEST的pH反应,以评估其pH映射能力.
主要成果:
- 在3T时在小鼠大脑中观察到一个明显的Guan质子峰值2.0ppm.
- 肌酸化学交换和转移 (CrCEST) 信号对总的GuanCEST信号贡献了大约23%.
- 对Cr Guan质子的估计汇率为200-300 s-1被确定.
- 模拟表明GuanCEST对细胞内pH值变化的敏感性,特别是在较低的B1场强度下.
结论:
- 在3T时可以实现肌酸化学交换和转移 (CrCEST) 映射.
- 这种技术对在大脑中非侵入性检测细胞内pH和Cr度具有前景.
- 进一步的研究可以探索其在神经系统疾病中的临床应用.
关键词:
亚米德CEST的使用情况氨酸CEST (ArgCEST) 是一种化学交换和转移 (CEST) 是一种度 度 度 度 度 度 度创造蛋白 CEST (CrCEST) 是一个汇率 汇率是指汇率的汇率.瓜尼迪诺或瓜尼迪尼CEST (GuanCEST) 的使用高光谱分辨率 (HSR) CEST 高光谱分辨率 (HSR) CEST绘制pH值的地图多项式罗伦斯直线形状拟合 (PLOF)两个阶段的布洛赫-麦康奈尔 (BM) 配件.更多相关视频
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