https://www.printspace3d.com/make-a-3d-print-from-your-mri-or-ct-scan/
Using https://www.slicer.org/ for 3D reco: https://www.youtube.com/watch?v=MKLWzD0PiIc
Using Mango: http://ric.uthscsa.edu/mango/mango.html
BV→.srf→ Meshes → Export Mesh