磁共振扩散张量成像的可视化方法研究进展

Progress in Visualization of MR Diffusion Tensor Imaging

磁共振扩散张量成像(DT-MRI)与传统的扩散加权成像(DWI)相比能够更加准确地反映分子扩散的方向。大脑白质区的水分子扩散表现出显著的各向异性,因而DT-MRI技术在显示白质神经纤维和功能束的走行方向以及三维形态等方面具有极大的优越性。主要介绍了该技术的基本原理及目前常用的数据集可视化的方法。

MR diffusion tensor imaging (DT-MRI) is a new technology which reflects the direction of molecule diffusion better than traditional diffusion weighted imaging (DWI) does. DT-MRI has great advantages of showing the distribution of white matter fiber path and its spatial structures because the water molecules in brain white matters have the obvious anisotropic diffusion. This paper introduces the basics of diffusion tensor imaging, and reviews the visualization methods used with DT-MRI.