Application of combination of MRI with subtraction CTA in diagnosis of TOBS

Objective:To explore the diagnosis and treatment application of MRI and CTA of TOBS.Methods:21 cases with TOBS using MRI and subtraction CTA inspection data were retrospectivey analyzed so as to observe the distribution range of pathological change,the void flow of vertebral or basilar artery and the structure of vertebral or basilar artery by MAI.Results:The infarction lies in the both sides of the thalamus,midbrain,cerebellum,occipital lobe,and temporal lobe.There were 13 cases with symmetrical infraction and 8 cases with unilateral infarction.14 cases had abnormal blood flow in vertebral artery and basilar artery.76.2%(16/21) of the survivals showed abnormal performance in vertebral and basilar artery,13 cases of whom had thin apex in basilar artery.38.1%(8/21) of patients surfered from the vertebral,basilar artery aneurysm,and five cases had no significant abnormalities in vertebral and basilar artery after subtraction CTA examination.Conclusion:The joint inspection of MRI and subtraction CTA provides comprehensive clinical information,which can be used as the preferred TOBS screening and diagnostic methods.