Abstract: Objective To explore the application effects of cervical vascular ultrasound in the judgment of collateral circulation in patients with internal carotid artery occlusion. Methods From August 2018 to January 2022, 72 cases of stroke patients who were diagnosed and treated in our hospital's neurosurgery department were selected as the research subjects. All patients were given cervical vascular ultrasound examination,imaging features were recorded,and the formation of collateral circulation were judged and given diagnostic value analysis. Results Among 72 patients, internal carotid artery angiography determined that internal carotid artery collateral circulation formed in 42 cases, accounting for 58.33%; Collateral circulation was not formed in 30 cases, accounting for 41.67%. There was statistical significance in the ultrasonic determination results of the degree of cervical vascular stenosis between the two groups(P<0.05). There was significant difference between the two groups in the ultrasonic evaluation results of the nature of cervical vascular plaques(P<0.05). A total of 41 cases were judged as collateral circulation by cervical vascular ultrasound. The sensitivity and specificity of cervical vascular ultrasound in the determination of collateral circulation in patients with internal carotid artery occlusion were 97.62% and 100.00%. ROC curve analysis showed that the area under the curve of cervical vascular ultrasound in the determination of collateral circulation in patients with internal carotid artery occlusion was 0.773. Conclusion Cervical vascular ultrasound has high sensitivity and specificity in judging collateral circulation in patients with internal carotid artery occlusion, and it can effectively determine the characteristics of cervical vascular stenosis and plaque. means of inspection.

Key words: cervical vascular ultrasound, internal carotid artery occlusion, collateral circulation, sensitivity, specificity