摘要
目的扩散张量成像(diffusion tenser imaging,DTI)是利用组织内水分子弥散运动在不同方向上存在各向异性,致信号差异而成像的一种磁共振功能成像技术,是目前可在活体内研究脑白质神经纤维束的唯一一种无创性检查技术,可立体直观显示并测量组织微观结构。DTI技术不仅可以显示纤维束走行结构特征,还可以进行量化分析,反映神经纤维轴索及髓鞘的病理改变。因此,DTI技术为视路疾病的显示、诊断和治疗提供了新的研究方法及有力依据。
Diffusion tenser imaging is a function magnetic resonance imaging technology by use of the anisotropy of water molecular＇s diffuse movement. And that it is the only one non-invasive examination technology for studies of brain white matter fiber tracts in vivo currently, it can display and measure the microstructure of tissue. Diffusion tenser imaging can not only demonstrate the structure characteristics of fiber bundles, a quantitative analysis can also reflect the pathological changes of the nerve fiber and myelin. Therefore , DTI provides new research methods and strong evidence for the presentation, diagnosis and treatment of visual pathway diseases.
出处
《医学影像学杂志》
2017年第11期2208-2210,共3页
Journal of Medical Imaging
关键词
全视路
磁共振成像
扩散张量成像
Visual pathway diseases
Magnetic resonance imaging
Diffusion tenser imaging
