磁共振扩散张量成像在视神经疾病上的研究进展

视神经疾病是一类严重影响视功能的疾病。近年来,磁共振扩散张量成像( diffusion tensor imaging,DTI)广泛应用于视神经疾病领域。较之于光学相干断层成像术、视觉诱发电位、视野等眼科检查,该方法具有明显优势,它可以直观显示视神经、视觉通路和视皮层的形态改变,定量分析视神经、视觉通路、视皮层的形态及病理改变。本文对DTI的成像原理、在视神经病变的临床研究进展及发展前景予以综述。

Progress in diffusion tensor imaging in the optic nerve disease

The optic nerve disease is a kind of diseases that seriously affect the visual function. In recent years, magnetic resonance diffusion tensor imaging(DTI)technology has been widely applied in the field of optic nerve diseases. Compared with the ophthalmic testing, such as optical coherence tomography imaging, visual evoked potential, field of vision, this method has obvious advantages. It not only can directly show the morphology changes of the optic nerve, visual pathway and visual cortex, but also can quantitatively analyze the morphological and pathological changes of the optic nerve, visual pathway and the visual cortex. This article reviews the imaging principle of diffusion tensor imaging, the progress and development prospect of diffusion tensor imaging in the study of the optic nerve diseases.