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人类脏高分辨率代谢成像的可行性,使用7T的集中环轨迹采样

Fabian Niess¹, Bernhard Strasser¹, Lukas Hingerl¹

¹High-Field MR Center, Department of Biomedical Imaging and Image-Guided Therapy, Medical University of Vienna, Vienna, Austria.

NMR in biomedicine

|September 9, 2025

概括

这项研究证明了7特斯拉的人类脏的非侵入性代谢成像 (DMI). 脏DMI成功地绘制了标记的水和葡萄糖动态,为个性化医学提供了潜力.

科学领域:

医疗成像医学成像
腎臟病學 (nephrology) 是一種醫學.
代谢成像 - 代谢成像

背景情况:

功能对于平衡至关重要,但通常以侵入性方式进行评估.
代谢成像 (DMI) 提供了一种非侵入性方法来追踪标记的标记物.
对于临床应用,需要高分辨率的脏成像.

研究的目的:

评估脏DMI在7特斯拉 (7T) 的可行性,用于高分辨率成像.
在人类脏中非侵入性地跟踪标记的水和葡萄糖.
为脏生理学和病理生理学中的临床应用奠定基础.

主要方法:

脏DMI在7T使用MR光谱成像与同心环轨迹.
通过口服服用乳标记水 (D2O) 或葡萄糖 ([6,6'-2H]-Glc).
持续的葡萄糖监测 (CGM) 用于与脏2H-葡萄糖水平进行比较.
3D地图采集每~8.5分钟一次,具有高空间分辨率.
张量马尔琴科-帕斯图尔主要组件分析 (tMPPCA) 用于光谱无声化.

主要成果:

2H-水和2H-葡萄糖的动态3D地图成功生成,空间分辨率得到了改进.
摄入后评估了脏2H水动态和稳定状态水平.
脏2H-葡萄糖度达到1.8 ± 1.0mM的峰值,与CGM数据保持一致.
动态脏DMI的可行性与改善的分辨率证明在7T.

结论:

在7T的动态DMI可用于非侵入性地绘制多个标记的标记物.
改善的空间分辨率提高了对功能临床研究的潜力.
未来的工作可以改善信号缓解和追踪剂的管理,以提高临床效用.
这种技术可能有助于评估SGLT-2抑制剂等疗法的代谢效应,以进行个性化治疗.

关键词:

3D磁共振光谱成像 3D磁共振光谱成像在 DMI 中,DMI 是 DMI 的代码.乳标有葡萄糖的标签标记的水是用标记的代谢成像代谢成像脏成像检查 - - 脏成像检查

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