Gamma Knife (Neurosurgery)

Body Area: Head / Neck
Body Parts: Eyes
Symptoms: Blindness
A gamma knife is used in a procedure, to shrink brain tumors in a single dose of radiation. In the procedure, the patient wears a specialized helmet that negates the gamma rays from killing healthy brain tissue, and keeps the tumor stationary. Next, a dose of gamma radiation is administered to the tumor to shrink it.