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

Double Resonance Techniques: Overview01:12

Double Resonance Techniques: Overview

197
Double resonance techniques in Nuclear Magnetic Resonance (NMR) spectroscopy involve the simultaneous application of two different frequencies or radiofrequency pulses to manipulate and observe two distinct nuclear spins. One important application of double resonance is spin decoupling, which selectively suppresses coupling with one type of nucleus while observing the NMR signal from another nucleus, simplifying the spectrum and enhancing resolution.
Spin decoupling is usually achieved by...
197
Mechanistic Models: Compartment Models in Algorithms for Numerical Problem Solving01:29

Mechanistic Models: Compartment Models in Algorithms for Numerical Problem Solving

48
Mechanistic models play a crucial role in algorithms for numerical problem-solving, particularly in nonlinear mixed effects modeling (NMEM). These models aim to minimize specific objective functions by evaluating various parameter estimates, leading to the development of systematic algorithms. In some cases, linearization techniques approximate the model using linear equations.
In individual population analyses, different algorithms are employed, such as Cauchy's method, which uses a...
48

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

Prospective Study of Multiparametric Renal MRI for CKD Progression (AFiRM).

Kidney international reports·2026
Same author

Estimating the Sodium Content: A Case Series of Benign and Malignant Renal Tumours Using <sup>23</sup>Na-MRI at 3 T.

NMR in biomedicine·2026
Same author

Simultaneous Intracranial Angiography and Susceptibility Imaging (SIAS) by Combining Velocity-Selective ASL and Multi-Echo SWI.

Magnetic resonance in medicine·2026
Same author

Adaptive Respiratory Motion Correction Framework for Ungated Hepatic 4D Flow MRI.

Magnetic resonance in medicine·2026
Same author

Slow-Flow-Sensitive Artery-Vein-Separated Velocity Mapping (SAM) Phase Contrast MR Angiography: Initial Evaluation of Hand Vasculature.

Magnetic resonance in medicine·2026
Same author

From chronic pain to depression: Neurogenesis-driven microglial remodeling in the hippocampal dentate gyrus.

Science (New York, N.Y.)·2026

相关实验视频

Updated: Jun 23, 2025

Quantifying X-Ray Fluorescence Data Using MAPS
14:58

Quantifying X-Ray Fluorescence Data Using MAPS

Published on: February 17, 2018

10.7K

使用基于模型的交替重建合器配件的高度加速的参数映射.

Shaohang Li1, Lili Wang1, Andrew N Priest2,3

  • 1Institute of Science and Technology for Brain-inspired Intelligence, Fudan University, Shanghai 200433, People's Republic of China.

Physics in medicine and biology
|June 25, 2024
PubMed
概括
此摘要是机器生成的。

一种名为基于模型的交替重建合 (MARCO) 的新方法提高了磁共振参数映射的准确性和速度. 这种技术增强了T2映射,即使在加速数据采集的情况下,也提供了更详细的结果.

关键词:
在T2映射中,将T2映射到地图上.基于模型的重建.定量的MRI是指MRI的数量.稀疏性建模的稀疏性建模

更多相关视频

Three-Dimensional Phase Resolved Functional Lung Magnetic Resonance Imaging
10:44

Three-Dimensional Phase Resolved Functional Lung Magnetic Resonance Imaging

Published on: June 21, 2024

477
An Experimental Protocol for Assessing the Performance of New Ultrasound Probes Based on CMUT Technology in Application to Brain Imaging
16:01

An Experimental Protocol for Assessing the Performance of New Ultrasound Probes Based on CMUT Technology in Application to Brain Imaging

Published on: September 24, 2017

10.4K

相关实验视频

Last Updated: Jun 23, 2025

Quantifying X-Ray Fluorescence Data Using MAPS
14:58

Quantifying X-Ray Fluorescence Data Using MAPS

Published on: February 17, 2018

10.7K
Three-Dimensional Phase Resolved Functional Lung Magnetic Resonance Imaging
10:44

Three-Dimensional Phase Resolved Functional Lung Magnetic Resonance Imaging

Published on: June 21, 2024

477
An Experimental Protocol for Assessing the Performance of New Ultrasound Probes Based on CMUT Technology in Application to Brain Imaging
16:01

An Experimental Protocol for Assessing the Performance of New Ultrasound Probes Based on CMUT Technology in Application to Brain Imaging

Published on: September 24, 2017

10.4K

科学领域:

  • 磁共振成像是一种磁共振成像技术.
  • 定量成像技术 定量成像技术
  • 医学物理 医学物理

背景情况:

  • 精确的磁共振 (MR) 参数映射对于定量成像至关重要.
  • 现有的方法面临着速度和准确性方面的挑战,特别是在高加速度系数下.

研究的目的:

  • 为准确和快速的MR参数映射引入基于模型的交替重建合配件 (MARCO).
  • 开发适用于各种定量MR放松计技术的灵活框架.

主要方法:

  • 马可使用信号模型作为规范化,最大限度地减少图像系列和模型衍生信号之间的偏差.
  • 它通过稀疏性约束结合了先前的知识,并将优化分解为交替重建和安装步骤.
  • 该方法同时重建对比权重图像和参数图.

主要成果:

  • 马可被应用于T2映射,与扩展相图算法集成.
  • 在低样本多回声旋转回声数据 (幻影和体内) 上的验证证明了卓越的性能.
  • 与压缩传感和传统基于模型的方法相比,MARCO在高速加速时生成了更准确的T2地图,并增强了细节.

结论:

  • 马可为定量MR放松计提供了一个强大的框架,适用于各种定量成像协议.
  • 该方法有可能显著提高定量MR成像技术的诊断价值.