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运动强壮的自由奔跑体积心血管MRI

Syed M Arshad^1,2, Lee C Potter^2,3, Chong Chen^1,2

¹Biomedical Engineering, The Ohio State University, Columbus, Ohio, USA.

Magnetic resonance in medicine

|May 11, 2024

概括

一种新的方法,压缩恢复与异常排斥 (CORe),通过减少运动工件来改善心血管MRI (CMR). 在自由运行扫描中,CORE可以提高图像质量和流量测量.

科学领域:

医疗成像医学成像
生物医学工程生物医学工程
心血管研究研究心血管研究

背景情况:

自由运行的体积心血管MRI (CMR) 易受运动工件的影响.
对运动的稳定性对于准确的CMR图像采集和分析至关重要.
现有的方法可能无法完全解决由运动引起的异常数据.

研究的目的:

引入和评估一种新的异常值缓解技术,用于自由运行的体积CMR.
为了提高心血管MRI对运动诱导人工物的稳定性.
提高从CMR数据中得出的定量测量的可靠性.

主要方法:

压缩回收与异常值排斥 (CORe) 方法将异常值作为添加变量模型.
在辅助变量上强制执行MR物理引导的小组稀疏性.
图像和辅助变量的联合估计是以代方式进行的.
CORe与传统的压缩传感 (CS),强大的回归 (RR) 以及模拟和真实CMR数据集中的现有异常拒绝方法进行了比较.

主要成果:

在模拟研究中,CORE在CS,RR和现有方法上表现优越.
专家评估证实了CORE在废物抑制和维持3D电影CMR图像清晰度方面的有效性.
CORe提供了更可靠和更一致的4D流量测量,特别是在运动和应力条件下.

结论:

提出的异常排斥方法CORE有效地抑制了自由运行的CMR中的运动工件.
在各种自由运行的CMR应用程序中,CORE显示了改善图像质量和定量分析的巨大潜力.
这种方法提高了心血管MRI在具有挑战性的获取场景中的实用性.

关键词:

核磁共振扫描 (MRI) 重建重建心脏成像 - - 心脏成像流动成像技术的流动成像技术运动工艺品运动工艺品异常值的拒绝情况

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Magnetic Resonance Imaging

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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...