Fig. 1

Case 1: A 33-year-old male patient. The preoperative MRI scan showed patchy long T1 and T2 signals in the right frontal lobe and subcortex (A–C). Preoperative three-dimensional reconstruction showing the spatial relationship between fiber tracts and tumor location (D, E). The preoperative plan was imported into the navigation system (F). Intraoperative MRI and intraoperative DTI three-dimensional reconstruction showed complete tumor resection and preservation of intact fiber tracts (G–I). DTI, diffusion tensor imaging; MRI, magnetic resonance imaging