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

9.0K
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...
9.0K
Imaging Studies for Cardiovascular System IV: CMRI01:21

Imaging Studies for Cardiovascular System IV: CMRI

300
Cardiovascular magnetic resonance imaging, or CMRI, is a non-invasive diagnostic test that employs a magnetic field and radiofrequency waves to create precise images of the heart and arteries. It provides comprehensive information about cardiac anatomy, function, perfusion, and tissue characterization without ionizing radiation.IndicationsCMRI diagnoses various heart conditions, including tissue damage from heart attacks, ischemic heart disease, myocarditis, aortic issues (tears, aneurysms,...
300

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

Hyperintense FLAIR signal in the anterior cranial fossa.

Nature communications·2026
Same author

C-DIR: Double Inversion Recovery with Controlled Artifact Suppression in Brain MRI.

AJNR. American journal of neuroradiology·2026
Same author

Optimized navigator-based correction of breathing-induced B<sub>0</sub> field fluctuations in multi-echo gradient-echo imaging of the spinal cord.

Magnetic resonance in medicine·2025
Same author

Rational approximation of golden angles: Accelerated reconstructions for radial MRI.

Magnetic resonance in medicine·2024
Same author

Enhanced and robust contrast in CEST MRI: Saturation pulse shape design via optimal control.

Magnetic resonance in medicine·2024
Same author

Robust dual-angle <math><msub><mrow><mi>T</mi></mrow> <mrow><mn>1</mn></mrow></msub></math> measurement in magnetization transfer spectroscopy by time-optimal control.

NMR in biomedicine·2024

相关实验视频

Updated: Jan 11, 2026

Reliable Acquisition of Electroencephalography Data during Simultaneous Electroencephalography and Functional MRI
11:00

Reliable Acquisition of Electroencephalography Data during Simultaneous Electroencephalography and Functional MRI

Published on: March 19, 2021

5.0K

C-FLAIR:在脑MRI中,用流体减弱的倒置恢复与受控的人工物抑制.

Christina Graf1,2, Alexander Jaffray1, Armin Rund3

  • 1Department of Physics and Astronomy, University of British Columbia, Vancouver, British Columbia, Canada.

Radiology
|November 18, 2025
PubMed
概括

一个新的受控的FLAIR (C-FLAIR) MRI序列有效地消除了由磁场不均引起的文物. 这种优化的脉冲可以提高图像质量,而不会影响损伤对比度或脑扫描中的信号与噪声比率.

更多相关视频

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

13.3K
Author Spotlight: Noninvasive Cerebral Blood Flow Determination in Human Functional Brain Region for Diagnosis of Neurological Disorders
05:23

Author Spotlight: Noninvasive Cerebral Blood Flow Determination in Human Functional Brain Region for Diagnosis of Neurological Disorders

Published on: May 31, 2024

833

相关实验视频

Last Updated: Jan 11, 2026

Reliable Acquisition of Electroencephalography Data during Simultaneous Electroencephalography and Functional MRI
11:00

Reliable Acquisition of Electroencephalography Data during Simultaneous Electroencephalography and Functional MRI

Published on: March 19, 2021

5.0K
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

13.3K
Author Spotlight: Noninvasive Cerebral Blood Flow Determination in Human Functional Brain Region for Diagnosis of Neurological Disorders
05:23

Author Spotlight: Noninvasive Cerebral Blood Flow Determination in Human Functional Brain Region for Diagnosis of Neurological Disorders

Published on: May 31, 2024

833

科学领域:

  • 放射学 放射学是一门学科.
  • 医疗成像医学成像
  • 磁共振成像是一种磁共振成像技术.

背景情况:

  • 常规的大脑MRI使用T2加权的流体减弱反转恢复 (FLAIR) 序列.
  • 场的不均性 (B0和RF) 可以导致人工物,掩盖或模仿病理.
  • 需要优化反转脉冲来提高FLAIR图像质量.

研究的目的:

  • 开发和评估一个优化的FLAIR反转脉冲,能够对B0和射频场的不均性保持强度.
  • 目标是减少文物,提高脑MRI的诊断准确度.

主要方法:

  • 一项前性研究使用了最佳控制来设计FLAIR反转脉冲 (C-FLAIR).
  • 图像是在3T在一个幻影和14名参与者 (健康,MS,脑震荡,WWH) 中获得的.
  • 放射科医生对信号抑制,人工制造物和病变可见性的视觉评估进行. 在健康志愿者中计算了SNR和CNR.

主要成果:

  • C-FLAIR展示了近乎完美的反转,消除了由场内不均性引起的工件.
  • 多发性硬化病变和白质过强度的图像对比度与传统的FLAIR保持一致.
  • 在FLAIR和C-FLAIR之间没有观察到平均SNR或CNR的显著差异.

结论:

  • 控制式FLAIR (C-FLAIR) 有效地消除了由于场的不均性而导致的不完整反转的工件.
  • 在C-FLAIR序列保持诊断图像对比关键的大脑病理.
  • 这种优化的脉冲在常规的大脑MRI协议中提供了更好的图像质量.