[Application of intraoperative MRI combined with neuronavigation in microsurgical resection for 
insular glioma]

To evaluate the value of intraoperative magnetic resonance imaging (iMRI) combined with neuronavigation for the resection of insular gliomas.
 Methods: From August 2014 to October 2017 in the First Hospital Affiliated to Sun Yat-sen University, clinical data of 41 patients with insular glioma, who underwent the surgery assisted with 3.0T iMRI and neuronavigation, were analyzed retrospectively, and the resection extent, complications and prognosis were evaluated.
 Results: Subtotal tumor resection was achieved in 21 patients and partial resection was done in 20 after iMRI scanning. After further resection, total tumor resection was achieved in 16 patients, subtotal resection in 18 and partial resection in 7. There was a statistical significant difference in tumor resection between pre-iMRI and post-iMRI according to the Fisher test (P<0.05). In the follow-up from 3 months to 3 years, the symptoms of the 41 patients had improved.
 Conclusion: iMRI corrected the shift of brain. Neuronavigation can accurately and timely assess the degree of resecting tumor. The combination of neuronavigation with surgery can maximally and safely resect insular glioma.