Real-time navigation of intraoperative ultrasound for cerebral hemisphere tumor resection

Objective To compare the advantages and disadvantages for operation instruction between preoperative MRI and intraoperative ultrasound,and evaluate the application value of intraoperative ultrasound.Methods 26 patients with cerebral hemisphere tumor who were performed 1.5T MRI for preoperative assessment and intraoperative ultrasound-assisted resection were analyzed retrospectively.Two methods' abilities for detection of the tumor blood supply and their difference of capacity for determining tumor boundary were compared.Results In the respect of detecting the tumor blood supply,intraoperative ultrasound had such advantages including better detection,powerful intraoperative guidance ability by real-time and any time detection.In the respect of determining tumor boundary and of estimating tumor size,there was no statistically significant difference between intra-operative ultrasound and preoperative magnetic resonance images.Although preoperative MRI had a better image definition,intraoperative ultrasound might have better ability for intraoperative guidance by its real-time and any time detection.Conclusion For cerebral hemisphere tumor resection,by the assist of intraoperative ultrasound,noninvasive detection efficiency can be increased,neurological damage can be reduced,the control the tumor blood supply can be more efficient and the total removal for tumor can be more anatomical structure assisted in real-time.