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用压缩感应灵敏度编码 (EPICS) 进行回声平面成像的实用性,用于评估头部和部区域

Yuya Hirano¹, Noriyuki Fujima², Kinya Ishizaka¹

¹Department of Radiological Technology, Hokkaido University Hospital, Sapporo, JPN.

|February 19, 2024

概括

与压缩感应灵敏度编码 (EPICS) 基于扩散加权成像的回声平面成像提供了优越的头部和部图像质量以及与传统并行成像相比的信号噪声比率,而不增加扭曲.

科学领域:

放射学放射学是一门学科.
医疗成像医学成像
磁共振成像技术磁共振成像技术

背景情况:

扩散加权成像 (DWI) 对于头部和部成像至关重要.
传统的并行成像 (PI) 加快了DWI获取,但可能会影响图像质量.
压缩感应灵敏度编码 (EPICS) 是加速MRI的先进技术.

研究的目的:

为了比较基于EPICS的DWI和基于PI的DWI之间的图像质量,用于头部和部成像.
量化评估信号噪声比 (SNR) 和明显扩散系数 (ADC).
以质量评估整体图像质量和图像扭曲.

主要方法:

10名健康的志愿者接受了头部和部MRI扫描.
EPICS-DWI和PI-DWI采用了2,3和4的加速度因子来获得.
定量分析包括唾液腺中的SNR和ADC测量.
定性分析使用视觉分级系统来对图像质量和扭曲进行定性分析.

主要成果:

与PI-DWI相比,EPICS-DWI在加速因子3和4时在腺中显示出明显更高的SNR.
在EPICS-DWI和PI-DWI之间没有观察到ADC值的显著差异.
在加速度因子3和4下,EPICS-DWI的整体图像质量显著提高.
在加速因子2时,EPICS-DWI中注意到图像扭曲的增加.

结论:

与PI-DWI相比,EPICS-DWI为头部和部成像提供了优越的SNR和整体图像质量.
适当的参数选择是最佳EPICS-DWI性能的关键.
在不损害图像完整性的情况下,EPICS-DWI可以成为PI-DWI的有价值替代品.

关键词:

压缩感应传感器压缩感应扩散加权成像 (dwi)声波平面成像 (epi) 技术头和子的头部和子.磁共振成像技术的使用

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