同时输液,扩散,T2 *,和T1映射与MR指纹绘制
Hongli Fan1,2, Lisa Bunker3, Zihan Wang1,2
1Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA.
Magnetic resonance in medicine
|September 26, 2023
概括
这项研究引入了一种新的MRI技术,使用磁共振指纹 (MRF) 同时绘制脑 perfusion,扩散,T2 *和T1. 这种新的方法提供了出色的图像质量,对中风患者来说是有前途的.
科学领域:
- 神经成像是一种神经成像.
- 磁共振成像 (MRI) 是一种磁共振成像技术.
- 脑血管疾病 脑血管疾病
背景情况:
- 脑输液,扩散,T2*和T1的定量测绘对于脑血管疾病诊断至关重要.
- 目前的MRI技术需要为每个参数进行单独的序列,从而增加扫描时间.
研究的目的:
- 开发一种新的MRI技术,用于同时估计 perfusion,diffusion,T2*和T1参数.
- 为了减少扫描时间,提高多参数脑图的效率.
主要方法:
- 基于MRF-动脉旋转标记 (ASL) 的修改磁共振指纹 (MRF) 序列被开发出来.
- 该序列包含了经过修改的采集模块,具有不同的回声时间 (TE) 和扩散权重梯度.
- 量化值与参考方法 (MRF-ASL,DWI,T2*映射) 进行了比较,并评估了测试重复测试的可重复性.
主要成果:
- 与单独的序列相比,这种新方法可以减少24%的扫描时间.
- 参数图显示出出色的图像质量,与参考方法有很强的相关性.
- 观察到ADC,T2*,T1和B1+估计的高可靠性 (CoV <5%).
- 该技术在最初的患者应用中成功检测出缺血性和出血性中风.
结论:
- 提出的同时多参数映射技术是MRI的一个有前途的进步.
- 这种方法在中风患者中具有显著的临床应用潜力,可提供高效和全面的脑评估.
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