| Objective:To investigate the diagnostic value of 3.0MR high resolution magnetic susceptibility weighted imaging
(SWI) for cerebral diffuse axonal injury (DAI).Methods:30 cases of patients who were diagnosed with DAI underwent SWI and
conventional sequence scan, the sensitivity and lesion morphology, distribution and lesion number of DAI tested by SWI and
conventional sequence scan were compared, and its correlation with Glasgow Coma Score (GCS) and the prognosis were analyzed.Results:① lesion number tested by SWI sequence in 30 cases of patients with DAI was 22.83, significantly higher than those (1 .5, 2.13,
4.1 respectively ) of T1 WI, T2WI, T2flair sequence, the difference was statistically significant ( X2=11 .44, P ＜ 0.05); ② The SWI
sequence presented that corticomedullary junction zone, white matter regions, basal ganglia, brain stem, cerebellum, corpus callosum
DAI lesions showed clear boundaries, different size dot, sheet, strip, beaded, dough nonuniform low signal; ③ The average number of
lesions was smaller when the GCS value was higher, there was a significant negative correlation between them (r=-0.715, P<0.05);④ The
DAI average number of DAI lesions, midline involving rate increased in cases of recovery, improvement, death, the difference was
statistically significant (F=9.29, X2=1 3.52, P<0.05).Conclusion:High resolution 3.0 TMR SWI sequences is more sensitive for DTI than
conventional sequence, number of lesions is correlated with GCS score, which can predict prognosis of patients. |
