The application of MR DTI in showing normal and infarcted optic radiation
ZHANG Hong
LIChuan-ting
XIAOWen-feng
DUYan-fei
ZHENG Xiu-zhu
SUNChun-ning
Abstract：Objective To study the normal fiber of visual pathway and changes in optic radiation infarction with diffusion tensor imaging (DTI) .Methods Conventional MRI ,DWI and DTI were performed in twenty healthy volunteers and ty-five patients with optic radiationinfarction .The fiber of visual pathway was depicted ,and the fractional anisotropy (FA) , apparent diffusion coefficient (ADC) ,volume relative anisotropy (VRA) and exponential anisotropy (EA) were measured and analyzed .Results Regions of interest (ROIs) were selected in different parts of volunteers for tracking the visual pathways .The different parameters were measured in infarction areas and contralateral normal areas .FA values in hyper-acute were increased slightly and were decreased in acute ,subacute and chronic phases .The ADC values in infarction re-gions were decreased in hyperacute ,acute and subacute phases .VRA and FA appeared positive correlation while EA ,and negative with ADC .Conclusion DTI could track the fiber of visual pathway ,which could be used in depicting fibers of in-farction zone and tracking prognosis of patients .
Keywords：Diffusion tensor imagingOptic radiationCerebral infarctionVisual pathways
Publication Date：2014-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 508-511 )