人类大脑代谢成像7T:不同[6,6'-2H2]葡萄糖剂量的影响
Narjes Ahmadian1, Maaike M Konig1, Sigrid Otto2
1Center for Image Sciences, University Medical Center Utrecht, Utrecht, The Netherlands.
Journal of magnetic resonance imaging : JMRI
|July 26, 2024
概括
使用[6,6'-2H2]葡萄糖的代谢成像 (DMI) 显示了剂量依赖的大脑信号. 剂量为0.50g/kg,在大脑中提供可比且可检测的2H-葡萄糖和2H-谷氨酸/谷氨胺水平.
科学领域:
- 生物医学成像学 生物医学成像学
- 代谢成像成像 - 代谢成像
- 神经科学是一个神经科学.
背景情况:
- 代谢成像 (DMI) 是一种使用2H标记基质的非侵入性MRI成像技术.
- 以前的DMI研究使用[6,6'-2H2]葡萄糖来检查大脑新陈代谢.
- 对于DMI脑成像的最佳[6,6′-2H2]葡萄糖剂量还没有被确立.
研究的目的:
- 为了评估三种不同的[6,6′-2H2]葡萄糖剂量对7特斯拉的人类大脑DMI数据的影响.
- 确定[6,6'-2H2]葡萄糖对大脑代谢物信号的剂量依赖作用.
主要方法:
- 一项前性研究,涉及6名健康参与者 (28±8岁).
- 给了三剂[6,6'-2H2]葡萄糖 (0.25, 0.50, 0.75 g/kg) 并在7T进行了120分钟的3D 2H-FID-MRSI扫描.
- 使用ANOVA和线性混合模型分析了血和大脑的2H-葡萄糖和2H-谷氨酸/谷氨胺水平.
主要成果:
- 血2H-葡萄糖APE与0.50g/kg和0.75g/kg剂量相似,但对于0.25g/kg剂量较低.
- 大脑2H-葡萄糖和2H-谷氨酸/谷氨胺水平在较高的[6,6'-2H2]葡萄糖剂量时显著增加.
- 对于0.50g/kg剂量来说,信号在大脑中是可比的,并且被很好地检测到.
结论:
- 大脑的2H-葡萄糖和2H-谷氨酸/谷氨胺信号取决于[6,6'-2H2]葡萄糖的剂量.
- 0.50g/kg的[6,6'-2H2]葡萄糖剂量对DMI有效,产生可比和可检测的大脑代谢物信号.
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