Parkinson's tremors. There is blurring of the bilateral substantia nigrosomes. The ventricles and basal cisterns are normal in size and configuration. There is no midline shift or herniation. The major cerebral flow voids are intact. The orbits, skull, paranasal sinuses, and scalp soft tissues are grossly unremarkable.
Preoperative planning MRI for Parkinson's disease deep brain stimulator insertion.