Application of Carotid Ultrasound Combined with MRA in the Diagnosis and Prognostic Evaluation of Acute Cerebral Infarction
Objective To explore the diagnostic efficacy of carotid ultrasound combined with Magnetic Resonance Angiography(MRA)for patients with acute cerebral infarction and its evaluation effect in patients'prognosis.Methods A retrospective analysis of 92 patients with arteriosclerosis diagnosed in the First Affiliated Hospital of Nanyang Medical Higher Vocational School from August 2020 to August 2021 was conducted,divided into cerebral infarction group and non-cerebral infarction group,comparing the thickness of the carotid artery intima-media,plaque type and the degree of stenosis of the vertebral artery in the brain of all research objects,and using the Receiver Operating Characteristic(ROC)to analyze the diagnostic value of carotid ultrasound combined with MRA for acute cerebral infarction,comparing the thickness of the carotid artery intima-media,plaque type and the degree of stenosis of the vertebral artery in the brain in patients with good prognosis and poor prognosis in the cerebral infarction group,and analyzing the predictive value of carotid ultrasound combined with MRA for the prognostic evaluation of acute cerebral infarction.Results The thickness of the carotid artery intima-media and the degree of stenosis of the vertebral artery in the cerebral infarction group were more severe than those in the non-cerebral infarction group,and the number of plaques detected was more than that in the non-cerebral infarction group,with statistically significant differences(P＜0.05).ROC results showed that the area under the ROC curve for the differential diagnosis of the thickness of the carotid artery intima-media,the number of plaques,and the degree of stenosis of the vertebral artery were 0.781,0.774,and 0.757,respectively.The thickness of the carotid artery intima-media in the patients with good prognosis was lower than that in the patients with poor prognosis,the number of plaques was less than that in the patients with poor prognosis,and the degree of stenosis of the vertebral artery was better than that in the patients with poor prognosis,with statistically significant differences(P＜0.05).ROC results showed that the area under the ROC curve for the differential diagnosis of the thickness of the carotid artery intima-media,the number of plaques,the degree of stenosis of the vertebral artery,and the combined differential diagnosis were 0.784,0.550,0.762,and 0.946,respectively.Conclusion Carotid ultrasound combined with MRA examination has a high predictive value for the diagnosis and prognostic evaluation of acute cerebral infarction.
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