相关实验视频

Updated: Jun 3, 2025

The Use of Magnetic Resonance Spectroscopy as a Tool for the Measurement of Bi-hemispheric Transcranial Electric Stimulation Effects on Primary Motor Cortex Metabolism

The Use of Magnetic Resonance Spectroscopy as a Tool for the Measurement of Bi-hemispheric Transcranial Electric Stimulation Effects on Primary Motor Cortex Metabolism

Published on: November 19, 2014

在10.5T的体内探索人类大脑代谢:来自MR光谱成像的初步见解

Lukas Hingerl¹, Bernhard Strasser¹, Simon Schmidt²

¹High-field MR Center HFMR, Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, Austria.

|January 10, 2025

概括

世界上第一个10.5 T MRI系统能够对人类大脑进行详细的3D MR光谱成像 (MRSI). 这种先进的技术在体内为大脑提供了前所未有的代谢地图.

科学领域:

神经成像是一种神经成像.
磁共振成像技术磁共振成像技术
代谢神经科学代谢神经科学

背景情况:

超高波段 (UHF) 磁共振 (MR) 系统 (7 T 和 9.4 T) 提高了探测人类大脑代谢的精度.
本研究介绍了使用新型10.5 T全身MR系统进行3DMR光谱成像 (MRSI) 的初步发现.

研究的目的:

介绍第一个健康的人类大脑的体内代谢地图,该地图是在10.5T时使用3DMRSI获得的.
评估10.5 T MRSI的可行性和初步结果,用于绘制大脑代谢物的地图.

主要方法:

在六名健康志愿者中使用定制的16通道发射和80通道接收MR线圈,以10.5T为MRSI收购.
测试了三种不同矩阵大小和扫描时间的MRSI协议 (4.43,3.43和2.753 mm3同otropic分辨率),使用同心环轨迹进行高效的3Dk空间编码.
进行了B0/B1闪,并获得了解剖学T1加权MRI.

主要成果:

在健康的人类大脑中在10.5 T时生成了第一个代谢地图,具有高 (4.43 mm3) 和超高 (2.753 mm3) 的同位素分辨率.
成功地绘制了13种代谢化合物 (例如NAA,GABA,谷氨酸) 和大分子单独的地图.
在叶和叶中获得了良好的光谱质量,平均tNAA信号噪声比为12.1 ± 8.9,分辨率为2.753 mm3. FID-MRSI方法证明了其在现场同质性方面的稳定性.

结论:

10.5 T MRSI显示出作为研究大脑新陈代谢的强大工具的巨大潜力.
该技术提供了前所未有的空间和光谱分辨率,可以独特地了解大脑代谢的复杂性.
需要进一步的技术进步来优化数据质量,并充分利用10.5 T MRSI的能力.

关键词:

10.5 泰斯拉电机的时间大脑的新陈代谢.同心环轨迹的轨迹是同心环的轨迹.在 MRSI 和 MRSI 中,空间光谱编码空间光谱编码超高场核磁共振 (MRI) 是一种超高场核磁共振.

更多相关视频

Functional Magnetic Resonance Spectroscopy at 7 T in the Rat Barrel Cortex During Whisker Activation

Functional Magnetic Resonance Spectroscopy at 7 T in the Rat Barrel Cortex During Whisker Activation

Published on: February 8, 2019

Noninvasive In Vivo Small Animal MRI and MRS: Basic Experimental Procedures

Noninvasive In Vivo Small Animal MRI and MRS: Basic Experimental Procedures

Published on: October 20, 2009

相关概念视频

Magnetic Resonance Imaging

Magnetic Resonance Imaging

Magnetic resonance imaging (MRI) is a noninvasive medical imaging technique based on a phenomenon of nuclear physics discovered in the 1930s, in which matter exposed to magnetic fields and radio waves was found to emit radio signals. In 1970, a physician and researcher named Raymond Damadian noticed that malignant (cancerous) tissue gave off different signals than normal body tissue. He applied for a patent for the first MRI scanning device in clinical use by the early 1980s. The early MRI...

Brain Imaging

Brain Imaging

Brain imaging technologies provide critical insights into both the structure and function of the human brain, enabling medical professionals and researchers to diagnose, study, and treat neurological disorders or psychiatric disorders more effectively.
These technologies include computerized axial tomography (CAT or CT scans), positron-emission tomography (PET scans), magnetic resonance imaging (MRI), functional magnetic resonance imaging (fMRI), and Transcranial Magnetic...