相关实验视频

Updated: Jul 9, 2025

Diffusion Tensor Magnetic Resonance Imaging in the Analysis of Neurodegenerative Diseases

Diffusion Tensor Magnetic Resonance Imaging in the Analysis of Neurodegenerative Diseases

Published on: July 28, 2013

复发性复发性多发性硬化症的非损伤性白质被评估为多组件T2放松

Pietro Bontempi¹, Umberto Rozzanigo², Sabrina Marangoni³

¹Department of Engineering for Innovation Medicine, University of Verona, Verona, Italy.

Brain and behavior

|December 2, 2023

概括

复发性缓解性多发性硬化症 (RRMS) 中微妙的白质变化与残疾,疾病持续时间和年龄相关. 在非损伤性白质中增加的自由水可能表明早期的大脑退化.

科学领域:

神经成像是一种神经成像.
神经学神经学
生物物理学的生物物理.

背景情况:

复发性复发性多发性硬化症 (RRMS) 的特征是脱髓化和轴突损伤.
评估非损伤性白质 (WM) 改变对于了解疾病进展至关重要.
T2放松成像为组织微观结构提供了洞察力.

研究的目的:

用T2放松来研究RRMS中的非损伤性白质 (WM) 变化.
为了将WM T2放松参数与疾病严重程度的临床和成像标志物相关联.

主要方法:

在20名稳定的RRMS患者中使用了1.5T MRI与多回声序列.
在FLAIR和T1图像上识别的焦点病变 (FLs) 被排除在外的细分非损伤性WM.
分析了T2放松参数,包括免费水 (Fw),并将它们与扩展残疾状态量表 (EDSS),疾病持续时间,年龄和FL体积相关联.

主要成果:

与EDSS相关的T1低强度焦点损伤体积.
在非损伤性WM中,自由水的中位数 (Fw) 与EDSS,疾病持续时间,年龄和FL体积有显著的相关性.
双变量分析没有提高FL体积,WM T2参数和EDSS之间的相关性意义.

结论:

T2放松可以检测RRMS中微妙的WM变化,这些变化与临床和疾病参数相关.
这些WM变化,特别是增加的自由水,可能表明早期的,未经研究的脑退化的前进现象.
WM的变化与EDSS,疾病持续时间和年龄有关,但在稳定的RRMS患者中可能不是EDSS的独立预测因素.

关键词:

骨髓质水成像骨髓质水成像这就是T2放松度.损伤细分损伤细分多发性硬化症多发性硬化症

更多相关视频

Magnetic Resonance Imaging of Multiple Sclerosis at 7.0 Tesla

Magnetic Resonance Imaging of Multiple Sclerosis at 7.0 Tesla

Published on: February 19, 2021

Comprehensive Autopsy Program for Individuals with Multiple Sclerosis

Comprehensive Autopsy Program for Individuals with Multiple Sclerosis

Published on: July 19, 2019

相关概念视频

Atomic Nuclei: Types of Nuclear Relaxation

Atomic Nuclei: Types of Nuclear Relaxation

Nuclear relaxation restores the equilibrium population imbalance and can occur via spin–lattice or spin–spin mechanisms, which are first-order exponential decay processes.
In spin–lattice or longitudinal relaxation, the excited spins exchange energy with the surrounding lattice as they return to the lower energy level. Among several mechanisms that contribute to spin–lattice relaxation, magnetic dipolar interactions are significant. Here, the excited nucleus transfers...

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...