Multiple sclerosis tremor: preop planning for DBS. There are extensive cerebral white matter T2 hyperintense and T1 hypointense lesions. There is diffuse cerebral volume loss. There is no midline shift or herniation. The major cerebral flow voids are intact. The orbits, skull, and scalp soft tissues are grossly unremarkable.
Preoperative planning MRI demonstrates extensive demyelinating disease.