相关实验视频

Updated: May 5, 2026

Simultaneous EEG Monitoring During Transcranial Direct Current Stimulation

Simultaneous EEG Monitoring During Transcranial Direct Current Stimulation

Published on: June 17, 2013

同时双边T₁,T₂,和T_1ρ松映射关节与3D-MRI指纹绘制的松映射

Anmol Monga¹, Hector Lise de Moura¹, Marcelo V W Zibetti¹

¹Center of Biomedical Imaging, Department of Radiology, New York University Grossman School of Medicine, New York, New York, USA.

Journal of magnetic resonance imaging : JMRI

|December 24, 2024

概括

三维MR指纹 (3D-MRF) 是评估关节软骨的一种可行的方法. 这种技术允许在健康和轻度骨关节炎患者中对多个放松参数进行定量映射.

科学领域:

放射学放射学是一门学科.
生物医学工程生物医学工程
医疗成像医学成像

背景情况:

三维MR指纹 (3D-MRF) 正在出现,用于膝关节软骨退化评估.
适应3D-MRF用于关节成像提出了独特的挑战.
这项研究探讨了3D-MRF用于关节软骨评估.

研究的目的:

确定3D-MRF用于双边关节映射的可行性和可重复性.
为了量化地绘制质子密度 (PD),T1,T2,T1ρ和 ΔB1+ 参数.
为了在临床上实用的扫描时间内实现这一目标.

主要方法:

这是一项前性研究,涉及8名健康受试者和4名患有关节骨质炎 (OA) 和/或大腿骨支柱阻塞 (FAI) 的患者.
在3T利用3D-MRF序列进行双边关节映射.
将3D-MRF与参考序列 (VIBE,TFL) 进行比较,并使用统计测试 (回归,Bland-Altman,Kruskal-Wallis,Wilcoxon) 进行分析.

主要成果:

3D-MRF序列在15分钟内实现了高的信号噪声比 (SNR) 和低的测试延期变化率 (T1: 3.36%,T2: 3.99%,T1ρ: 5.93%).
与健康对照组相比,轻度关节OA患者在大腿侧腔内显示T2 (29.4±9%) 和T1ρ (32.4±4.4%) 的显著升高.
评估了准确性,可重复性和次区域差异.

结论:

3D-MRF证明了双边关节同时进行定量软骨映射的可行性.
这种技术对健康个体和轻度OA患者的软骨评估具有前景.
定量参数图有可能区分健康和退化的关节软骨.

关键词:

关节软骨 - 关节软骨关节关节关节关节磁共振指纹的使用定量映射定量映射定量映射定量映射回归分析是一种回归分析.可以重复的可重复性.

更多相关视频

Simultaneous Transcranial Alternating Current Stimulation and Functional Magnetic Resonance Imaging

Simultaneous Transcranial Alternating Current Stimulation and Functional Magnetic Resonance Imaging

Published on: June 5, 2017

Bilateral Assessment of the Corticospinal Pathways of the Ankle Muscles Using Navigated Transcranial Magnetic Stimulation

Bilateral Assessment of the Corticospinal Pathways of the Ankle Muscles Using Navigated Transcranial Magnetic Stimulation

Published on: February 19, 2019

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...