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 Resonance Imaging01:24

Magnetic Resonance Imaging

5.2K
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...
5.2K
Imaging Studies IV: Magnetic Resonance Imaging01:27

Imaging Studies IV: Magnetic Resonance Imaging

26
Introduction:Magnetic Resonance Imaging, or MRI, can include a specialized imaging technique of the urinary system known as Magnetic Resonance Urography (MRU). This radiation-free technique uses strong magnetic fields and radio waves to produce detailed images with the help of a computer. MRU is particularly effective for visualizing fluid-filled structures like the kidneys, ureters, and bladder.Applications of MRI in the Genitourinary SystemKidneys and Ureters: MRI detects tumors, cysts,...
26

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

Revisiting the auditory hemodynamic response function in the era of fast fMRI.

bioRxiv : the preprint server for biology·2026
Same author

Online image reconstruction via Multiple Orthogonal Reference Sensitivity Encoding (MORSE).

Magma (New York, N.Y.)·2026
Same author

Association of antiseizure medication with lower amyloid and tau burden.

medRxiv : the preprint server for health sciences·2026
Same author

UCL Queen Square Institute of Neurology: 75 years of innovation.

The Lancet. Neurology·2026
Same author

When the test lies: Fatal cryptococcosis and the prozone effect in advanced HIV infection.

Diagnostic microbiology and infectious disease·2026
Same author

White matter microstructure fingerprint of cerebral small vessel disease.

Brain : a journal of neurology·2026

相关实验视频

Updated: Jul 18, 2025

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

从多次扫描中计算的运动损坏的MRI放松计数据的统计分析.

Nadège Corbin1, Rita Oliveira2, Quentin Raynaud2

  • 1Centre de Résonance Magnétique des Systèmes Biologiques, UMR5536, CNRS/University Bordeaux, Bordeaux, France; Wellcome Centre for Human Neuroimaging, UCL Queen Square Institute of Neurology, University College London, London, UK.

Journal of neuroscience methods
|August 20, 2023
PubMed
概括

QUIQI方法通过恢复噪音的同质性来增强磁共振成像 (MRI) 分析,提高了定量MRI图的统计有效性,尽管头部运动. 这种方法比现有方法提供了更高的灵敏度.

关键词:
异性多样性 异性多样性动议腐败的腐败问题量化MRI是指数量化的MRI.统计群组分析 统计群组分析

更多相关视频

Generalized Psychophysiological Interaction PPI Analysis of Memory Related Connectivity in Individuals at Genetic Risk for Alzheimer's Disease
09:38

Generalized Psychophysiological Interaction PPI Analysis of Memory Related Connectivity in Individuals at Genetic Risk for Alzheimer's Disease

Published on: November 14, 2017

15.0K
High-resolution Functional Magnetic Resonance Imaging Methods for Human Midbrain
10:06

High-resolution Functional Magnetic Resonance Imaging Methods for Human Midbrain

Published on: May 10, 2012

12.9K

相关实验视频

Last Updated: Jul 18, 2025

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
Generalized Psychophysiological Interaction PPI Analysis of Memory Related Connectivity in Individuals at Genetic Risk for Alzheimer's Disease
09:38

Generalized Psychophysiological Interaction PPI Analysis of Memory Related Connectivity in Individuals at Genetic Risk for Alzheimer's Disease

Published on: November 14, 2017

15.0K
High-resolution Functional Magnetic Resonance Imaging Methods for Human Midbrain
10:06

High-resolution Functional Magnetic Resonance Imaging Methods for Human Midbrain

Published on: May 10, 2012

12.9K

科学领域:

  • 磁共振成像 (MRI) 是一种磁共振成像技术.
  • 统计分析 统计分析
  • 神经成像是一种神经成像.

背景情况:

  • 使用线性回归的MRI数据的统计分析需要噪声的同质性才能有效.
  • 在MRI扫描期间头部运动会降低图像质量,导致噪声异性,并损害普通最小方形分析.

研究的目的:

  • 将成像中的定量图像质量 (QUIQI) 方法扩展到定量磁共振成像 (qMRI) 参数图.
  • 在分析从多个扫描,包括R1,R2*和MTsat地图计算的qMRI数据时恢复噪声的同步性.

主要方法:

  • QUIQI方法采用加权最小方形分析,其权重来自动作诱导的图像质量退化.
  • 它优化了噪声模型,使用对异性和自由能量的指标.
  • 该框架扩展到从多个图像集中得出的定量MRI参数 (R1,R2*,MTsat).

主要成果:

  • 在定量MRI数据分析中,QUIQI有效地恢复了 homoscedasticity.
  • 与将图像质量指数纳入分析设计相比,它表现出更高的性能.
  • QUIQI提供了比排除被头部运动严重损坏的数据集更高的灵敏度.

结论:

  • QUIQI提供了一种最佳和强大的方法,用于对各种定量MRI参数图的群体分析.
  • 这种方法有效地解决了MRI数据中头部运动引起的固有异质粘性问题.
  • 这提高了定量MRI分析的可靠性和敏感性.