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

¹³C NMR: Distortionless Enhancement by Polarization Transfer (DEPT)01:20

¹³C NMR: Distortionless Enhancement by Polarization Transfer (DEPT)

When proton-coupled carbon-13 spectra are simplified by a broadband proton decoupling technique, structural information about the coupled protons is lost. Distortionless enhancement by polarization transfer (DEPT) is a technique that provides information on the number of hydrogens attached to each carbon in a molecule. While the DEPT experiment utilizes complex pulse sequences, the pulse delay and flip angle are specifically manipulated. The resulting signals have different phases depending on...
Assessment of Diffusion and Perfusion01:17

Assessment of Diffusion and Perfusion

Understanding and evaluating diffusion and perfusion is critical in assessing a patient's respiratory and circulatory health. These processes play key roles in maintaining the body's internal environment, ensuring that tissues receive adequate oxygen while waste products are efficiently removed.
The Role of Diffusion in Respiration
Diffusion is the process by which molecules move from an area of higher concentration to an area of lower concentration. In the respiratory system, this principle...
Radiological Investigation II: MRI and Ventilation Perfusion Scan01:30

Radiological Investigation II: MRI and Ventilation Perfusion Scan

Description
Magnetic Resonance Imaging (MRI) and Ventilation Perfusion Scans are two radiological investigations that offer detailed diagnostic images of the body, particularly lung structures.
MRI
MRI uses magnetic fields and radiofrequency signals to distinguish between normal and abnormal tissues. This technology provides a more detailed diagnostic image than CT scans, enabling it to characterize pulmonary nodules, stage bronchogenic carcinoma, and evaluate inflammatory activity in...

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

Hand in glove: New imaging techniques and airway endoscopy.

Paediatric respiratory reviews·2026
Same author

Phenotyping bronchopulmonary dysplasia using magnetic resonance imaging.

Paediatric respiratory reviews·2026
Same author

Lung mucus burden and treatment response assessed by MRI in the post-modulator era.

Journal of cystic fibrosis : official journal of the European Cystic Fibrosis Society·2026
Same author

Characterization of Pulmonary Dysfunction in Systemic Juvenile Idiopathic Arthritis Using Xenon and Proton MRI.

Pediatric pulmonology·2026
Same author

Novel translational pulmonary MRI in pediatrics: A Review of the last 10 years.

The European respiratory journal·2026
Same author

Pulmonary vascular growth in bronchopulmonary dysplasia using magnetic resonance imaging.

American journal of respiratory and critical care medicine·2026

相关实验视频

Updated: Jul 14, 2026

Author Spotlight: Standardization and Best Practices for Advancing Lung Imaging Using 129Xe MRI
09:08

Author Spotlight: Standardization and Best Practices for Advancing Lung Imaging Using 129Xe MRI

Published on: November 21, 2023

825

改善的扩散加权超极化Xe肺MRI与基于补丁的更高顺序,单数值分解 Denoising.

Stephanie A Soderlund1, Abdullah S Bdaiwi2, Joseph W Plummer1

  • 1Center for Pulmonary Imaging Research, Division of Pulmonary Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio 45229, USA; Department of Biomedical Engineering, University of Cincinnati, Cincinnati, Ohio 45221, Cincinnati, Ohio 45229, USA.

Academic radiology
|July 3, 2024
PubMed
概括

全球局部更高序单值分解 (GLHOSVD) 无声化增强了超极化核磁共振中的信号噪声比,改善了肺微观结构测量. 这种方法减少了明显扩散系数 (ADC) 计算中的不确定性和偏差,特别是在患病的肺部区域.

关键词:
拒绝这种行为,就是拒绝.扩散权重的MRI测试结果超极化异异是一种超极化异.肺部的肺部是指肺部的肺部.

更多相关视频

Author Spotlight: Advancing Lung Disease Research with Free-Breathing Hyperpolarized Xenon-129 MRI
08:23

Author Spotlight: Advancing Lung Disease Research with Free-Breathing Hyperpolarized Xenon-129 MRI

Published on: November 10, 2023

631
Multi-modal Pulmonary Imaging: Using Complementary Information from CT and Hyperpolarized 129Xe MRI to Evaluate Lung Structure-Function
02:09

Multi-modal Pulmonary Imaging: Using Complementary Information from CT and Hyperpolarized 129Xe MRI to Evaluate Lung Structure-Function

Published on: April 12, 2024

575

相关实验视频

Last Updated: Jul 14, 2026

Author Spotlight: Standardization and Best Practices for Advancing Lung Imaging Using 129Xe MRI
09:08

Author Spotlight: Standardization and Best Practices for Advancing Lung Imaging Using 129Xe MRI

Published on: November 21, 2023

825
Author Spotlight: Advancing Lung Disease Research with Free-Breathing Hyperpolarized Xenon-129 MRI
08:23

Author Spotlight: Advancing Lung Disease Research with Free-Breathing Hyperpolarized Xenon-129 MRI

Published on: November 10, 2023

631
Multi-modal Pulmonary Imaging: Using Complementary Information from CT and Hyperpolarized 129Xe MRI to Evaluate Lung Structure-Function
02:09

Multi-modal Pulmonary Imaging: Using Complementary Information from CT and Hyperpolarized 129Xe MRI to Evaluate Lung Structure-Function

Published on: April 12, 2024

575

科学领域:

  • 医疗成像医学成像
  • 肺部医学 肺部医学
  • 图像处理 图像处理

背景情况:

  • 超极化 (Xe) 核磁共振是评估肺部结构和功能的非侵入性工具.
  • 扩散加权成像,使用表面扩散系数 (ADC),绘制了气膜空气空间尺寸变化.
  • 在扩散权重的XeMRI中低的信号噪声比 (SNR) 引入了ADC测量的不确定性和偏差,特别是在扩散高的区域.

研究的目的:

  • 应用全球局部更高序单数值分解 (GLHOSVD) denoising,以增强SNR在扩散加权129XeMRI.
  • 为了减少ADC测量的不确定性和偏差.
  • 为了能够量化以前无法进入的高扩散区域的肺微观结构.

主要方法:

  • 使用模拟图像和气体幽灵验证了GLHOSVD的无声化.
  • 该方法应用于120名受试者 (对照组,囊性纤维化,LAM,喘) 的扩散权重的XeMRI数据.
  • 图像SNR,ADC和分布式扩散系数 (DDC) 在无声化前后进行了比较.

主要成果:

  • 在模拟,幻影和实体图像中,GLHOSVD显著增加了SNR (超过2倍,p < 0.001).
  • 虽然平均ADC和DDC保持不变 (p > 0.05),但它们的标准偏差在无效化后显著下降 (p < 0.001).
  • 光改善了图像质量,并使高扩散肺部区域的测量成为可能.

结论:

  • 在扩散权重的XeMRI中,GLHOSVD无声化有效地增强SNR.
  • 这种技术可以减少ADC和DDC测量的不确定性和偏差.
  • 通过GLHOSVD,可以更好地量化肺微观结构,为肺部疾病病理学提供新的见解.