The value of DTI and SWI sequence in diagnosis of diffuse axonal injury

VernacularTitle:DTI 和 SWI 序列在弥漫性轴索损伤中的应用价值
Author: Mingying HE ; Yi YANG ; Ying HUANG ; Hong YIN
Publication Type:Journal Article
Keywords: diffuse axonal injury; magnetic resonance imaging; diffusion tensor imaging; susceptibility weighted imaging
From: Journal of Practical Radiology 2014;(11):1783-1786
CountryChina
Language:Chinese
Abstract: Objective To assess the value of diffusion tensor imaging(DTI)and susceptibility weighted imaging(SWI)in diagno-sis of acute diffuse axonal injury.Methods The imaging data of 45 cases with acute DAI diagnosed by clinical symptoms were ana-lyzed retrospectively.In all the images of T2 WI,FLAIR ,DTI and SWI we analyzed the characteristic of signal and distribution of all the lesions.The numbers of lesions found in each sequence group were statistically analyzed by chi-square test.Results 497 lesions of DAI we all found.265 lesions were found in FLAIR,the detection rate was 53.3%.313 lesions in DTI,the rate was 62.9%.448 lesions in SWI,the rate was 90.1%.The detection rate of DTI and SWI were significantly higher than FLAIR,they had significant difference(P <0.05).Conclusion DTI combined with SWI,we can find DAI lesions in acute phase more comprehensively.DTI di-mensional diffusion tensor imaging technique can help us visualize discontinuous fibers intuitively in DAI and confirm objectively the existence of DAI lesions.