The diagnosis value of combination MRI,DWI and CTA to TOBS

Objective:To explore the diagnosis value of MRI,DWI and CTA of TOBS.Methods:The conventional MRI and DWI image material of 26 cases of TOBS were retrospectively analyzed so as to contrast different infarction finding rate with different MR sequence and observe the distribution range of infarctions.the CTA manifestation of 21cases of TOBS were analyzed to observe veterbral artery and bailary artery constructions.Results:The focus of infarction mainly distribute in both sides of the thalamus,midbrain,cerebellum,occipital lobe and internal side of temporal lobe.Total 183 infarction focuses of 26 cases discovered by DWI are more than 136 focuses fund by T2WI(134.6﹪).There were 21 cases(80.8%) with symmetrial infarction and 5 cases(19.2%) with unilateral infarction.14 cases CTA(66.7﹪) of 21 cases showed abnormal performance in vertebal and basilar artery,including 2 cases of basilar artery aneurysm,3 cases of vertebral artery aneurysm and 7 cases of arteriosclerosis in vertebral and basilar artery.Conclusion:DW is the most sensitive image-examine technique in making early phase diagnosis of TOBS.CTA can backward part pathogen of TOBS.The combination of two technique can reinforce pathogen diagnosis of TOBS.