A Clinical Study of DWI and FLAIR in Acute Cerebral Infarction

Objective To explore the clinical value of DWI and FLAIR in the diagnosis of acute cerebral infarction. Methods 60 cases of acute cerebral infarction, including 7 cases of super acute stage (6 h), 24 cases of acute stage (6～24 h), 29 cases of subacute stage (24～72 h), were examined with T 1WI, T 2WI, FLAIR and DWI sequences. The extent, boundary and contrast of lesions on all images were compared. ADC and rADC of the lesions were calculated.Results ① The extent and contrast of lesions on DWI and FLAIR were superior to conventional T 1WI and T 2WI, the visualization of the lesions on DWI was proved to be better than on FLAIR. ② With the increasing of b value, the better effect of diffusion was observed, and the more clearly infarct lesion was showed. The all direction of diffusion showed more clearly images than the single direction of diffusion. ③ The value of ADC and rADC of the lesions decreased in all cases. Conclusion DWI is of the most sensitive, and combined with FLAIR, DWI has great value in the diagnosis of acute cerebral infarction.