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

4.9K
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...
4.9K

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

CMR Reveals the Influence of Trigger and Classification on the Myocardial Tissue Response in Takotsubo Syndrome.

Circulation. Cardiovascular imaging·2026
Same author

4D Flow MRI at 0.6 T-Self-Gating Versus Camera-Based Respiratory Binning.

Bioengineering (Basel, Switzerland)·2026
Same author

Aortic 4D flow CMR for the assessment of hemodynamics in aortic stenosis: association with markers of cardiac decompensation and remodeling.

American journal of physiology. Heart and circulatory physiology·2026
Same author

Optimized Detection of Left Ventricular Hyperpolarized [1-<sup>13</sup>C]Pyruvate Signal in Human Cardiac Metabolic Imaging.

Magnetic resonance in medicine·2026
Same author

The White Matter Hyperintensity Shape and Brain Clearance (WHIMAS) Study for Identification of Novel 7T Magnetic Resonance Imaging Markers of Cerebral Small Vessel Disease: Protocol for a Cross-Sectional Study.

JMIR research protocols·2025
Same author

Variable density and anisotropic field-of-view for 3D Stack-of-Stars radial imaging.

Magma (New York, N.Y.)·2025

相关实验视频

Updated: May 21, 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

8.6K

无参考的4D流MRI使用0.6T的辐射平衡SSFP在0.6T.

Charles McGrath1, Pietro Dirix1, Vincent Vousten1

  • 1Institute for Biomedical Engineering, University and ETH Zurich, Zurich, Switzerland.

Magnetic resonance in medicine
|March 19, 2025
PubMed
概括
此摘要是机器生成的。

这项研究表明,在0.6T使用一种新的3DPC-bSSFP技术进行四维流MRI的可行性. 该方法提供了足够的流量量化和同时摄影成像,用于心血管评估.

关键词:
4D 流动MRI 4D 流动MRI是指四维的流动MRI.平衡的稳定状态 自由前cession 的平衡状态.血液流量量化和量化这是一个低地低地.阶段对比相位对比的相位对比.

更多相关视频

Registered Bioimaging of Nanomaterials for Diagnostic and Therapeutic Monitoring
17:16

Registered Bioimaging of Nanomaterials for Diagnostic and Therapeutic Monitoring

Published on: December 9, 2010

10.3K
Human Fetal Blood Flow Quantification with Magnetic Resonance Imaging and Motion Compensation
06:56

Human Fetal Blood Flow Quantification with Magnetic Resonance Imaging and Motion Compensation

Published on: January 7, 2021

2.0K

相关实验视频

Last Updated: May 21, 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

8.6K
Registered Bioimaging of Nanomaterials for Diagnostic and Therapeutic Monitoring
17:16

Registered Bioimaging of Nanomaterials for Diagnostic and Therapeutic Monitoring

Published on: December 9, 2010

10.3K
Human Fetal Blood Flow Quantification with Magnetic Resonance Imaging and Motion Compensation
06:56

Human Fetal Blood Flow Quantification with Magnetic Resonance Imaging and Motion Compensation

Published on: January 7, 2021

2.0K

科学领域:

  • 心血管成像 - 心血管成像
  • 磁共振成像是一种磁共振成像技术.
  • 医学物理 医学物理

背景情况:

  • 四维流动MRI (4D流动MRI) 能够全面评估血液流动动态.
  • 在低场强度系统上实施先进的4D流MRI技术带来了独特的挑战.
  • 优化图像采集和重建对于准确的流量量化至关重要.

研究的目的:

  • 实施和验证一个自由运行的,三维 (3D) 辐射,相对比平衡的稳定状态自由前行 (PC-bSSFP) 技术,用于0.6T的4D流MRI.
  • 在这种低场设置中评估无参考背景相位校正的可行性.
  • 评估开发的4D流式MRI方法的性能,用于解剖视觉化和流量量化.

主要方法:

  • 为0.6T扫描仪开发了一种新的自由运行,摇摆的阿基米德螺旋轨迹,具有双极速度编码梯度 (3D PC-bSSFP).
  • 使用了三点编码方案,省略了参考扫描,并使用时间平均重建应用了无参考背景相位校正.
  • 图像重建采用了局部低级方法,对解剖和流量数据进行了单独的规范化. 在6名健康受试者身上获得了体内数据,并与2DPC-GRE参考扫描进行了比较.

主要成果:

  • 来自3D PC-bSSFP的速度数据与2D PC-GRE显示出很好的一致性,根平均平方误差为3.96厘米/秒,小的速度低估.
  • 与2D PC-bSSFP相比,3D PC-bSSFP的信号噪声比率在整个心脏周期中相对稳定,在高流量阶段有所减少.
  • 该方法成功地提供了同时拍摄的电影图像和流量定量,从而可以同时评估心脏和大血管功能.

结论:

  • 在0.6T系统上,使用辐射3DPC-bSSFP的自由运行,无引用的4D流式MRI是可行的.
  • 该技术产生了足够的流量量化和合理的电影图像,用于同时进行心血管评估.
  • 这种方法为在低场MRI扫描仪上可访问的心血管成像提供了一个有希望的途径.