Use of intraoperative MRI for resection of intracranial tumors: A nationwide analysis of short-term outcomes

Extent of surgical resection is one of the most important prognostic factors for patients with gliomas and other brain tumors, yet there are wide discrepancies between intraoperative surgeon perception and postoperatively confirmed tumor margins.[1–5] The primary goal of brain tumor surgery—achieving maximal tumor resection with minimal injury to surrounding parenchyma—has failed to be optimized by conventional neuronavigation methods.[2–9] Static preoperative images are inadequate for appreciating dynamic intraoperative landscapes due to brain shift that results from alterations such as cerebrospinal fluid loss, resection, edema, and hemorrhage.