Image-guided surgery of epilepsy.

Interactive image-guided techniques used in conjunction with three-dimensional images allow accurate planning and performance of a variety of neurosurgical procedures. The authors have used the frameless stereotactic Allegro Viewing Wand System to provide real-time correlation of the operating field and computerized images in over 200 neurosurgical operations carried out for intractable epilepsy. The authors experience shows that the viewing wand system is most helpful as an adjunctive navigational device in the microsurgical treatment of epilepsy.