Jove
Visualize
联系我们
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关概念视频

Magnetic Susceptibility and Permeability01:31

Magnetic Susceptibility and Permeability

1.2K
In linear magnetic materials, like paramagnets and diamagnets, magnetization is proportional to the magnetic field intensity. The constant of proportionality, a dimensionless number, is called magnetic susceptibility. The value of the susceptibility depends on the type of material.
When diamagnetic materials are placed under an external magnetic field, the moments opposite to the field are induced. Hence, the susceptibility for diamagnets has a minimal negative value of 10-5–10-6. Since...
1.2K

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

Repeatability of Susceptibility Source Separation Methods in Human Brain: A Single-Site Study at 3 T.

NMR in biomedicine·2026
Same author

Progressive and Short-Interval Changes Observed in the Corticospinal Tract and Corpus Callosum of Patients with Amyotrophic Lateral Sclerosis: A Texture Analysis Study.

AJNR. American journal of neuroradiology·2025
Same author

Importance of R<sub>2</sub> accuracy in susceptibility source separation.

Magnetic resonance in medicine·2025
Same author

Acute Blood Pressure Lowering and Risk of Ischemic Lesions on MRI After Intracerebral Hemorrhage.

JAMA neurology·2025
Same author

Quantifying cerebral microbleeds using quantitative susceptibility mapping from magnetization-prepared rapid gradient-echo.

NMR in biomedicine·2024
Same author

Mismatch between clinically defined classification of ALS stage and the burden of cerebral pathology.

Journal of neurology·2024
Same journal

Multi-Contrast Human Brain CEST MRI at 11.7 T: First In Vivo Demonstration.

Magnetic resonance in medicine·2026
Same journal

Suppression of Oscillation and Ghosting in RF-Spoiled Gradient-Echo-Based Dynamic Imaging.

Magnetic resonance in medicine·2026
Same journal

A Simple, Dynamic Geometric Phantom for MRI and CT Reconstruction Pipelines: Beyond Shepp-Logan.

Magnetic resonance in medicine·2026
Same journal

7T 3D-EPI PCASL With High SNR Efficiency and Robustness to Through-Plane B<sub>0</sub> Field Gradients.

Magnetic resonance in medicine·2026
Same journal

A Comparison of Tissue Property Values Estimated Using Conventional Cardiac MRF and MT-Cardiac MRF.

Magnetic resonance in medicine·2026
Same journal

Dependence of the Extra-Cellular Diffusion Coefficient on the Fractions of Neurites and Cell Bodies in Gray Matter.

Magnetic resonance in medicine·2026
查看所有相关文章

相关实验视频

Updated: Jul 20, 2025

Magnetic Resonance Imaging of Multiple Sclerosis at 7.0 Tesla
08:51

Magnetic Resonance Imaging of Multiple Sclerosis at 7.0 Tesla

Published on: February 19, 2021

9.0K

薄板的定量敏感性测绘绘图.

Nashwan Naji1, Alan Wilman1

  • 1Department of Biomedical Engineering, University of Alberta, Edmonton, Alberta, Canada.

Magnetic resonance in medicine
|August 1, 2023
PubMed
概括
此摘要是机器生成的。

本研究引入了一种使用低分辨率数据进行定量敏感度映射 (QSM) 的新方法,以改进高分辨率,薄板重建. 这种方法可以实现更快,更准确的焦点QSM采集.

关键词:
3T 3T 3T 3T 3T 3T 3T 3T 3T 3T 3T 3T焦点采集的焦点采集定量敏感性映射 (QSM) 是一种方法.这是一块薄薄的板块.

更多相关视频

Quantitative Magnetic Resonance Imaging of Skeletal Muscle Disease
09:30

Quantitative Magnetic Resonance Imaging of Skeletal Muscle Disease

Published on: December 18, 2016

19.6K
Quantitative Immunofluorescence to Measure Global Localized Translation
09:13

Quantitative Immunofluorescence to Measure Global Localized Translation

Published on: August 22, 2017

10.0K

相关实验视频

Last Updated: Jul 20, 2025

Magnetic Resonance Imaging of Multiple Sclerosis at 7.0 Tesla
08:51

Magnetic Resonance Imaging of Multiple Sclerosis at 7.0 Tesla

Published on: February 19, 2021

9.0K
Quantitative Magnetic Resonance Imaging of Skeletal Muscle Disease
09:30

Quantitative Magnetic Resonance Imaging of Skeletal Muscle Disease

Published on: December 18, 2016

19.6K
Quantitative Immunofluorescence to Measure Global Localized Translation
09:13

Quantitative Immunofluorescence to Measure Global Localized Translation

Published on: August 22, 2017

10.0K

科学领域:

  • 医疗成像医学成像
  • 生物物理学的生物物理.
  • 神经成像是一种神经成像.

背景情况:

  • 从薄板进行定量敏感度映射 (QSM) 面临诸如由于背景场移除错误导致低估等挑战.
  • 在数据支持减少的情况下,解决3D倒置问题是很困难的,特别是在主要磁场沿线.

研究的目的:

  • 通过结合额外的低分辨率数据来改进QSM从薄板重建.
  • 为了使可靠的QSM从缩短扫描时间的焦点采集.

主要方法:

  • 提出了一种使用快速,低分辨率数据和扩展覆盖范围来增强背景场估计的方法.
  • 将这一点应用于高分辨率的薄板数据,以改进反转规范化.
  • 在3T时用模拟和体内脑部数据进行测试,与标准大体积方法进行比较.

主要成果:

  • 从薄板 (10.4毫米宽) 实现了体内高分辨率的QSM,使用24倍粗的低分辨率数据集.
  • 模拟显示,至少有八个切片的板块的测量结果一致.
  • 针对<5%的平均ROI误差,优化了低分辨率数据要求.

结论:

  • 拟议的方法有助于在亚毫米分辨率下获得焦点QSM.
  • 这使得针对QSM成像的采集时间大大缩短.