Clinical application of susceptibility-weighted imaging in the early diagnosis of massive cerebral infarction with hemorrhage and analysis of collateral circulation / 中国综合临床

ABSTRACT

Objective To evaluate the clinical application of susceptibility-weighted imaging(SWI) in the early diagnosis of massive cerebral infarction with hemorrhage and analysis of collateral circulation.Methods Fifty patients with massive cerebral infarction underwent MRI (T1WI,T2WI,DWI,MRA and SWI) scan in acute stage and decubation respectively in Hanrison International Peace Hospital from January 2012 to January 2014.Analysis T1WI,T2WI,DWI,MRA and SWI differences in the delection of cerebral infarction with hemorrhage and analysis of Collateral circulation.Record the magnetic resonance angiography hemorrhagic transformation and display the ischemic area of collateral circulation in the detection of cerebral infarction remodeling differences.Results (1)SWI detected out 18 cases of cerebral infarction with hemorrhage (36％),including 14 cases of hemorrhagic infarction(HI) type(28％),4 cases of parenchymal hemorrhage(PH) type 8％).MRI detected 11 cases of cerebral infarction with hemorrhage (22％),including 7 cases of HI type 14％),4 cases of PH type (8％).SWI detected 106 focuses,the detection rate was 100％,MRI detected only 26,and the detection rate was 32.51％,and the missing mainly for micro hemorrhage.There was statistical significance between the groups(x2 =21.045,P＜0.05).(2) SWI can display the condition of micrangium in the area of cerebral infarction clearly.The number of micrangium decreased or disappeared in acute stage,but the micrangium increased in decubation.The ratio of capillary vessels increased to 66％.MRA detected 82％ of criminal vessel in patients with cerebral infarction.Conclusion SWI is more sensitive than conventional MR in the early diagnosis of massive cerebral infarction with hemorrhage.MRA combined with SWI could not only detect the criminal vessel of cerebral infarction area,but also monitor the reconstruction of collateral circulation in the infarction region,and there will be extremely valuable to the treatment massive cerebral infarction and evaluation of prognosis.