关键词: 磁共振成像; 弥散; 脑血管病

Abstract: Magnetic resonance diffusion tensor imaging (DTI) is the water diffusion imaging technique developed in recent years, which quantitatively reflects the integrity of white matter fiber tracts by the diffusion of water molecules in human brain. It is mainly used to evaluate the integrity of white matter especially the white matter fiber tracts which influenced by neurologic diseases. So far, DTI is the unique examination which can quantitatively reflect the integrity of white matter fiber tracts by the diffusion of water molecules in human brain without any intrusion. This technique can analyze the diffusion characteristic of the affected tissue and normal tissue quantitatively, exhibit the relationship between the intracerebral affections and the white matter fiber tracts directly. Therefore, it provides more information for diagnosis and prognosis of the diseases. This article reviews the principle of DTI and summarizes the current researches of its common clinical application in cerebrovascular diseases.

Key words: Magnetic resonance imaging(MRI); Diffusion; Cerebrovascular disease(CVD)