肺部结构性MRI使用自由呼吸,自闭式超短回声时间成像
1Division of Pulmonary, Critical Care, and Sleep Medicine, Hoglund Biomedical Imaging Center, University of Kansas Medical Center; pniedbalski@kumc.edu.
Journal of visualized experiments : JoVE
|September 23, 2024
概括
超短回声时间 (UTE) MRI为肺部成像提供了一个无辐射的替代方案,克服了运动挑战. 本协议详细介绍了UTE MRI的采集和自门重建,以实现高质量的肺成像.
科学领域:
- 放射学 放射学是一门学科.
- 医疗成像医学成像
- 肺部医学 肺部医学
背景情况:
- 由于组织密度低,信号衰减快,以及运动,高质量的肺部MRI很困难.
- 计算机断层扫描 (CT) 是标准的,但使用电离辐射,限制其在儿科和研究中的使用.
- 超短回声时间 (UTE) MRI 是肺部成像的新兴替代方案.
研究的目的:
- 为获得高质量的肺部UTE MRI提供简单,强大和高效的协议.
- 为了使不同呼吸阶段的自闭式图像重建成为可能.
- 为肺部成像提供CT的替代方案,特别是在对辐射敏感的群体.
主要方法:
- 在3T开发了一种用于3D辐射UTEMRI采集的协议.
- 使用在自由呼吸扫描 (约5-10分钟) 中编码的呼吸运动信息实现了自闭门.
- 包括推的参数设置和自门成像的重建方向.
主要成果:
- 实现了高分辨率的UTE肺部MRI与最小的运动文物.
- 证明了在不同的呼吸阶段生成图像的可行性.
- 该协议在计算上高效,并简化了图像采集.
结论:
- 提出的UTE MRI协议提供了高质量的,工件最小化的肺成像.
- 这种方法是CT的可行,无辐射的替代方法,用于评估肺部结构.
- 适用于各种肺部疾病和脆弱患者群体的研究.
相关概念视频
01:30Radiological Investigation II: MRI and Ventilation Perfusion Scan
105
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...
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...
105
01:24Magnetic Resonance Imaging
5.0K
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...
5.0K