The diagnostic value of high-resolution magnetic resonance angiography for intracranial artery stenosis in patients with acute cerebral infarction

HUA Bing; ZHOU Tao; GU Xiaolin; YUAN Lihua; WU Maohong

doi:10.20258/j.cnki.1006-9011.2025.10.001

Abstract：Objective To explore the diagnostic value of high-resolution magnetic resonance vessel wall imaging(HRMR-VWI)technology for intracranial artery stenosis in patients with acute cerebral infarction.Method 78 patients with complete data of acute cerebral infarction were selected from our hospital,all of whom completed HRMR-VWI and digital subtraction angi-ography(DSA)examinations.The DSA examination results were used as the gold standard to calculate the sensitivity,specific-ity,and accuracy of HRMR-VWI technology in detecting diseased blood vessels.The HRMR-VWI technical parameters of pa-tients with different degrees of vascular stenosis were compared,and the diagnostic value of HRMR-VWI technology for acute cerebral infarction was analyzed.Results A total of 125 diseased blood vessels were detected in 78 patients with acute cerebral infarction through DSA examination.DSA examination was used as the gold standard,the accuracy,specificity,and sensitivity of HRMR-VWI technology in detecting diseased blood vessels in patients with acute cerebral infarction were 96.46%,98.59%,and 88.00%,respectively.The consistency between the results of HRMR-VWI technology detecting acute ce-rebral infarction lesions and DSA examination was good(Kappa=0.887,P<0.001).According to the evaluation,among the 78 patients with acute cerebral infarction,there were 20 cases of mild stenosis,36 cases of moderate stenosis and 22 cases of severe stenosis.The plaque load index and plaque enhancement rate in the severe stenosis group were higher than those in the mild ste-nosis group and the moderate stenosis group,and the vascular remodeling index was lower than that in the mild stenosis group and the moderate stenosis group(P<0.05).ROC curves showed that the AUC for evaluating the degree of vascular stenosis in pa-tients with acute cerebral infarction using plaque burden index,plaque enhancement rate,and vascular remodeling index was all greater than 0.7,indicating certain evaluation value.Conclusion HRMR-VWI technology has high diagnostic efficacy for acute cerebral infarction,can effectively detect diseased blood vessels in patients,and has certain evaluation value for the de-gree of stenosis of diseased blood vessels in patients.