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基于回声合并的快速和高分辨率T₂映射加k-t低样本与减少重定焦翻转角度 (TEMPURA) 作为人类脏MRI的方法

Hao Li^1,2, Andrew N Priest^2,3, Ines Horvat-Menih²

¹Institute of Science and Technology for Brain-Inspired Intelligence, Fudan University, Shanghai, China.

Magnetic resonance in medicine

|May 11, 2024

概括

在TEMPURA方法显著加快脏T2映射和增强空间分辨率. 这种先进的技术提高了临床效率和细节可视化脏组织,包括瘤.

科学领域:

磁共振成像是一种磁共振成像技术.
医学成像技术医学成像技术
脏生理学脏生理学

背景情况:

脏T2映射对于评估脏组织特征至关重要.
目前用于T2映射的方法通常耗时或缺乏足够的空间分辨率.
需要加速成像技术来提高临床适用性.

研究的目的:

开发TEMPURA,一种高度加速的多回声旋转回声方法,用于脏T2映射.
为了缩短采集时间和/或增加T2测量的空间分辨率.
在幻影和体内研究中评估TEMPURA的性能.

主要方法:

TEMPURA使用回声组合或共享将相邻的回声合并为单个k空间.
重建是使用压缩传感理论进行的.
减少翻转角度和扩展相图算法正确的间接回声效应.

主要成果:

快速TEMPURA将获取时间缩短到一个喘息时间 (18秒),准确度与标准化方法相比.
高分辨率的TEMPURA提高了平面内空间分辨率到1x1mm2,增强了解剖细节.
在体内测量结果显示与标准化方法有很好的一致性和高相关性,单纯的k-t低样本表现优于标准化方法.

结论:

泰普拉可以快速和高分辨率的T2测量.
该方法有可能增加临床吞吐量.
在高空间分辨率下,TEMPURA可以改善内异质性和组织息地的划分.

关键词:

T2映射的映射 T2映射的映射的映射压缩感应传感器压缩感应图像加速度的成像.脏脏脏脏多回声旋转回声多回声定量的MRI是指MRI的数量.

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