The using of intra - operative ultrasound in gliomas(212 cases reports)

Abstract

Objective To share the experience in using intra-operative ultrasound(IOUS)for brain gliomas removal. Method From July 2007 to August 2009,212 patients with brain gliomas were included in the study. Depending on the distance to the cortex,we divided the patiens into shallow location(＜ 2 cm)groups and deep location(≥2 cm)groups. The IOUS was used before,during and after tumors resection to localize the tumors, define their margins and assess the extent of resection at the end of surgery. The suspected signal region in the tumor-brain interface which were reported as tumor or normal tissue on IOUSwere submitted to histopathology. MRI review in 5 days after operation to assessment the tumor resection. Results Total resection in 192 cases and subtotal resection in 20 cases in MRI. There were 110cases in shallow group and 102 cases in deep group. The sensitivity and specificity of IOUS was 93.9% and 95.1% in shallow location group,and 95.7% and 36.4% in deep location group. Conclusions IOUS is a useful tool for determining the extent of resection and improve the operation resection rate, especially to the deep location tumors. IOUS should be routine use in the glioma operation. Key words: Ultrasonography; Glioma