Gamma knife treatment center discipline characteristics (a) have a brain tumor is not terrible, please see the gamma knife first Patients treated with the gamma knife can return to normal life and work ability in a day or days after surgery, the same patient if the craniotomy method, it will take weeks or months to normal life and return to work. Indeed Gamma Knife removes tumors without a knife, realizing the dream of mankind for many years. Patients are always awake during the whole treatment process, no hair, skull, brain tissue trauma, no risk of general anesthesia and side effects, no need to risk the life of craniotomy, postoperative infection and postoperative disability rate is also extremely low, greatly shorten the postoperative recovery time and hospital days, the patient quickly put into work, but also to reduce the burden of the whole family. (B) when gamma knife treatment is effective Gamma knife treatment and craniotomy treatment principle is different. Craniotomy is through the removal of tumor to achieve the purpose of treatment, while gamma knife is through the gamma radiation to kill the tumor, tumor cell degeneration necrosis is a certain process, different tumor cells take different time to undergo this change, the patient’s clinical symptoms have also improved. Therefore, patients must have the same examination before and after surgery, and the comparison can make an objective assessment of the efficacy of gamma knife. The assessment of the efficacy of Gamma Knife can also be supplemented by some other laboratory tests for reference in addition to imaging, such as pituitary adenoma department to measure the treatment effect by the endocrine changes before and after the surgery. In general, the doctors of the Gamma Knife Center will follow up with the patients and inform them to do the corresponding review, therefore, we hope that the patients can also actively cooperate with the review according to the requirements of the physicians. (C) Gamma knife treatment before and after comparison I. Diagnosis: Giant pituitary tumor Giant pituitary tumor Gamma knife before the tumor pushed upward by the optic cross Postoperative (two years) most of the tumor disappeared Optic cross and tumor detachment. Ectopic pineal tumor before surgery Tumor disappeared after surgery Intracranial metastases (single, multiple, <3cm) Chordoma (4cm) CPA occupancy (auditory neuroma, meningioma) Cervical V ball tumor (regardless of size) Trigeminal nerve tumor (<4cm) Nasopharyngeal carcinoma (regardless of size) Paranasal sinus tumor (<4cm) Orbital tumor (including ophthalmic and retrobulbar tumors, <3cm) Brain stem tumor (involving medulla oblongata <2cm can Oral palate tumor, intracranial neurofibroma, intracranial germ cell tumor, medulloblastoma Second, intracranial hemangioma: AVM (4cm better, >4cm worse) arteriovenous aneurysm is not suitable for gamma knife, ischemic cerebrovascular disease is not suitable for gamma knife. Third, functional diseases: Parkinson’s syndrome (tremor and tonic type), primary trigeminal neuralgia, cancer pain is severe, etc.