A Comparative Analysis on the Diagnostic Value of CT and MRI in Acute Ischemic Stroke
Objective To compare and analyze the diagnostic value of computerized tomography(CT)and magnetic resonance imaging(MRI)in patients with acute ischemic stroke(AIS).Methods A total of 180 patients with AIS confirmed in the hospital were enrolled as the research objects between January 2020 and October 2023.All underwent CT and MRI examinations.The artery stenosis degree,CT parameters[cerebral blood flow(CBF),cerebral blood volume(CBV),mean transit time(MTT)and time to peak(TTP)in infarct and mirror areas]and MRI parameters[CBF and apparent diffusion coefficient(ADC)in infarct and mirror areas]by the two methods were recorded.The diagnostic value of relevant parameters in AIS patients was analyzed by ROC curves.Results The detection rate of moderate artery stenosis by MRI was higher than that by CT,while detection rate of mild stenosis was lower than that by CT(P＜0.05).Under CT examination,MTT and TTP in infarct area were longer than those in mirror area,while CBV and CBF were significantly lower than those in mirror area(P＜0.05).Under MRI examination,CBF and ADC in infarction area were lower than those in mirror area(P＜0.05).The results of ROC curves analysis showed that MTT(AUC=0.760),TTP(AUC=0.788)and CBF(AUC=0.759)by CT were of good diagnostic value for AIS patients(P＜0.05),while ADC(AUC=0.786)and CBF(AUC=0.834)by MRI were also of good diagnostic value for AIS patients(P＜0.05).The diagnostic value of CBF by MRI was the highest.Conclusion Both CT and MRI have good diagnostic value in patients with AIS.CBF of infarction lesion by MRI is more accurate than that by CT.
万方数据
维普
