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

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...
Radiological Investigation III: Pulmonary Angiogram and PET Scan01:13

Radiological Investigation III: Pulmonary Angiogram and PET Scan

Radiological investigations are paramount in the diagnosis and management of various pulmonary diseases. Two essential investigations are the Pulmonary Angiogram and the Positron Emission Tomography (PET) Scan.
Pulmonary Angiogram
A Pulmonary Angiogram is an invasive procedure involving injecting a contrast medium through a catheter threaded into the pulmonary artery or the right side of the heart to visualize the pulmonary vasculature. Computed Tomography (CT) scans have mainly replaced this...

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

Impact of Baydur Ratio Correction on the Reliability of Esophageal Pressure Measurement.

Journal of applied physiology (Bethesda, Md. : 1985)·2026
Same author

Characterizing heterogeneity and subphenotyping acute respiratory distress syndrome with computed tomography.

Intensive care medicine experimental·2026
Same author

The impact of metabolic syndrome on regional ventilation and perfusion in ARDS: an observational cohort study using electrical impedance tomography.

Intensive care medicine experimental·2026
Same author

Effect of varying driving pressure and respiratory rate on ventilator-induced lung injury in healthy and injured lungs: An experimental animal study.

The Journal of physiology·2025
Same author

Biomechanical implications of mass loading in a swine model of acute hypoxemic respiratory failure.

Journal of applied physiology (Bethesda, Md. : 1985)·2025
Same author

Not too much, not too little. Titrating flow rate to minimise inspiratory effort during helmet CPAP: A bench study.

Pulmonology·2025

相关实验视频

Updated: Jun 9, 2026

Author Spotlight: Enhancing Diagnostic Strategies and Biomarker Development for Comprehensive Lung Function Analysis
05:56

Author Spotlight: Enhancing Diagnostic Strategies and Biomarker Development for Comprehensive Lung Function Analysis

Published on: August 9, 2024

1.1K

监督和无监督学习用于电阻断层扫描中的肺 perfusion 数据分割.

Marcus Victor1,2,3, Arthur Ribeiro3, Monica Matsumoto3,4

  • 1Department of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital, Boston, MA, United States of America.

Biomedical physics & engineering express
|June 5, 2025
PubMed
概括

主要组件分析有效地细分了电阻断层扫描中的肺 perfusion 数据,提高了机械通风患者的准确性. 这种无监督学习方法准确地区分了肺和混合肺 perfusion 信号.

关键词:
电阻断层扫描电阻断层扫描图像分割 图像细分 图像细分机器学习是机器学习.肺 perfusion 肺 perfusion 肺 perfusion 肺 perfusion 肺 perfusion 肺 perfusion 肺 perfusion 肺 perfusion 肺 perfusion 肺 perfusion 肺 perfusion 肺 perfusion 肺 perfusion 肺 perfusion 肺 perfusion 肺 perfusion 肺 perfusion 肺 perfusion 肺 perfusion 肺 perfusion 肺 perfusion 肺 perfusion 肺 perfusion 肺 perfusion 肺 perfusion监督学习学习监督学习没有监督的学习学习.

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

459
Monitoring Lung Function with Electrical Impedance Tomography in the Intensive Care Unit
05:56

Monitoring Lung Function with Electrical Impedance Tomography in the Intensive Care Unit

Published on: September 6, 2024

1.7K

相关实验视频

Last Updated: Jun 9, 2026

Author Spotlight: Enhancing Diagnostic Strategies and Biomarker Development for Comprehensive Lung Function Analysis
05:56

Author Spotlight: Enhancing Diagnostic Strategies and Biomarker Development for Comprehensive Lung Function Analysis

Published on: August 9, 2024

1.1K
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

459
Monitoring Lung Function with Electrical Impedance Tomography in the Intensive Care Unit
05:56

Monitoring Lung Function with Electrical Impedance Tomography in the Intensive Care Unit

Published on: September 6, 2024

1.7K

科学领域:

  • 身体生理学 身体生理学
  • 医疗成像医学成像
  • 机器学习 机器学习

背景情况:

  • 机械通风可以破坏肺通风和 perfusion 之间的平衡,这对气体交换至关重要.
  • 电阻断层扫描 (EIT) 用于肺 perfusion 评估,通常使用盐水注射.
  • 为了进行准确的分析,EIT数据需要细分,以区分肺 (仅肺) 和混合 (心脏和肺) 指示途径.

研究的目的:

  • 开发和比较监督和无监督学习算法,以对通过EIT获得的肺 perfusion 数据进行细分.
  • 评估这些算法的性能,以区分肺与混合指标动力学.
  • 评估急性肺损伤对细分方法性能的影响.

主要方法:

  • 16只猪接受机械通风,EIT用于评估注射盐水后的肺 perfusion.
  • 监督 (袋式树,神经网络,支持矢量机) 和无监督 (K-means,层次,主要组件分析) 的学习方法应用于voxel波形.
  • 训练和测试方法与手动绘制的地面真相面具相对应,在健康和受伤的肺部状态下评估性能.

主要成果:

  • 主要组件分析 (无监督学习) 显示出卓越的性能:83%的灵敏度,92%的特异性,89%的准确性和84%的子相似系数.
  • 在健康和受伤的肺部条件之间,性能是一致的.
  • 与监督方法相比,无监督方法产生了更具生理可信性和更少分散的感兴趣区域.

结论:

  • 通过有效的细分,准确的voxel标签对于使用EIT进行可靠的肺 perfusion评估至关重要.
  • 主要组件分析提供了一种强大而有效的无监督方法,用于细分EIT衍生的肺 perfusion 数据.
  • 改进的细分增强了指标流通路径的区分,从而更好地估计了区域肺血流.