Study on Intraoperative Ultrasound in Cerebral Vascular Disease

Objective To realize echoes and blood flows in different tumors and to explore the significance of ultrasound in directing operation, improving the operation safety and finding residues.Methods Intraoperative ultrasound findings in 204 patients with cerebral vascular disease were analyzed retrospectively,record the numbers,location,depth,size of different tumors and relationship of the tumors with surrounding tissues.For the patients of AVM (arteriovenous malformation),feeding arteries and draining veins need to distinguish from normal vessels.Results (1) Intraoperative ultrasound can accurately locate AVM and demonstrate feeding arteries and draining veins,the sensitivity and specificity of diagnosing resedue was 85% and 100%.(2) All of cavernous hemangiomas (66 cases) were found quickly and accurately by intraoperative ultrasound.(3) 9 of 11 aneurysms were demonstrated as well as thrombus.(4) 32 of 35 hemangioblastoma were found by intraoperative ultrasound.Except parenchyma types,the tumors of intraoperative ultrasound found were conformity with MRI.Conclusion lntraoperative ultrasound may define location and orientation of cerebral vascular disease,define the border,evaluate blood flows,reduce injury,and improve the diagnostic accuracy and found residues in time.