Keywords: تومور مغزی; Cerebral tumor; cioUS; Extent of resection; Glioma; High frequency ultrasound imaging; iMRI; lioUS; Ultrasound3D, 3-dimensional; cioUS, Conventional intraoperative ultrasound; EoR, Extend of resection; GBM, Glioblastoma multiforme; GTR, Gross total resect