弥散张量成像技术(DTI)是在弥散加权成像技术(DWI)基础上发展起来的一种新的磁共振成像技术,是目前唯一无创性反映活体组织水分子交换功能状况的检查方法,可以从细胞及分子水平研究缺血性脑卒中(CIS)的病理改变情况。本文总结国内外大量文献,就DTI的成像原理及其在CIS的超早期诊断、准确定位、病情进展的评估和判断预后等方面的临床应用价值进行综述。 Diffusion tensor imaging (DTI) is a new magnetic resonance imaging technique developed on the basis of diffusion-weighted imaging (DWI) technology. It is the only noninvasive method to check the status of water molecule exchange in living tissues. Cell and molecular levels of ischemic stroke (CIS) pathological changes. This article summarizes a large number of literatures at home and abroad, summarizes the imaging principle of DTI and its clinical application value in the ultra-early diagnosis, accurate positioning of the CIS, assessment of disease progression and prognosis.