Value of MRI and CT in Diagnosing Early Cerebral Ischemia after Severe Hypertensive Cerebral Hemorrhage Surgery
Objective:To explore the value of MRI and CT in diagnosing early cerebral ischemia after severe hypertensive intracerebral hemorrhage surgery.Method:A total of 94 patients with suspected early cerebral ischemia after severe hypertensive cerebral hemorrhage surgery were selected from Affiliated Nanhua Hospital,University of South China from January 2021 to December 2023.All patients underwent MRI and CT examination.The results of angiography were used as the gold standard to analyze the cerebral ischemia detection situation of CT and MRI examination.The diagnostic efficacy of CT and MRI examination were analyzed.Apparent diffusion coefficient(ADC)value,cerebral blood flow(CBF),cerebral blood volume(CBV)and mean transit time(MTT)of contrast agent were compared between positive and negative patients.Result:With angiography as the gold standard,45 cases were true positive and 25 were true negative cases on CT.There were 57 true positive cases and 34 true negative cases on MRI.The sensitivity,accuracy and specificity of MRI examination were higher than those of CT examination,the difference was statistically significant(P<0.05).ADC value,CBF and CBV in positive patients were lower than those in negative patients,and MTT was longer than that in negative patients,the differences were statistically significant(P<0.05).Conclusion:Both MRI and CT examination have certain value in early cerebral ischemia diagnosis after severe hypertensive cerebral hemorrhage surgery,but MRI has higher accuracy.
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