METHODS:
We performed a retrospective review of a total of 56 patients who underwent iMRI guided transsphenoidal pituitary tumor resection over a period between November 2011 to April 2018 at Northwestern Medicine Central Dupage Hospital. We defined gross-total resection as removal of the pituitary tumor in its entirety as seen during intraoperative MRI use. The endoscopic endonasal transsphenoidal approach was used to resect all of the pituitary tumors in this study. The source of the patient data that was acquired for this study was through the use of electronic medical records. Intraoperative and post-operative MRI reports were interpreted and used during analysis. The type of MRI used during surgery was the Imirs Intraoperative MRI system which supports 1.5 to 3 Tesla. This study was approved by the institution’s review board (IRB #18-054). The reporting guideline for our study includes our results, discussions, and conclusions.