How to convert 2D nifit into 3D view?

hello, every professor
i am new to this software and i do some researches on OFC (orbitofrontal cortex) sulcogyral patterns at the past. Now, i want to convert the 2D view into 3D view only in OFC, Everybody has some good ideas?
Best wishes
Zixiang Wang

You can use Segment Editor module to create a 3D model of a structure you delineate in 2D views.