What is Gamma Knife As we all know, the surgeon is a scalpel to cut through the body’s skin to access internal organs to remove lesions or make repairs to achieve the purpose of treatment. In order to avoid the pain caused by surgery, anesthesia is required during the operation. Therefore, surgery and anesthesia inevitably bring certain pain, trauma, and even danger to the patient. In recent years, with the development of multidisciplinary comprehensive high-tech, the field of surgery has emerged a new discipline one stereotactic radiosurgery; this is a kind of surgery without knife, without causing damage to normal tissues, without pain and without anesthesia, safe and non-invasive surgical treatment; gamma knife is the use of gamma radiation focused on the body pre-selected target (lesion) through a (SRS) or multiple (SRT) The effect of surgical excision or destruction is achieved by destroying the target tissue with one (SRS) or multiple (SRT) irradiation. In other words, the treatment system uses r-rays instead of a scalpel, and because the decomposition of the treated lesion and normal tissue is very obvious, the edge is as sharp as a knife cut, so people are imaginatively called “gamma knife (r-knife)”. How to observe the clinical effect of gamma knife Gamma knife is a kind of radiation therapy. It does not remove the diseased tissue immediately like surgery. The site to be treated after receiving a one-time irradiation, there is a longer process of degeneration, necrosis, generally can be divided into three stages: (1) necrosis: 3-4 weeks after treatment, the irradiated tissue acute degenerative changes and inflammatory reaction; (2) absorption period: after the necrosis period to one year after irradiation, the irradiated tissue cell lysis fragments are gradually absorbed, glial cell proliferation Therefore, the efficacy of Gamma Knife treatment is continuous and gradual, so it cannot be evaluated by the situation at the time after treatment. For example, generally benign tumors no longer increase in size after irradiation, and shrink significantly after 3-6 months, and the patient’s various clinical symptoms improve significantly or disappear. Patients can be reviewed after several months of gamma knife treatment and observe the process of improvement and gradual disappearance of symptoms. Gamma knife in domestic and foreign applications Gamma knife is a precise radiotherapy equipment, is the product of modern high technology, with high precision, high dose, high efficacy, ground damage, can treat a variety of intracranial diseases and systemic tumors (a total of meningioma, pituitary tumors, craniopharyngioma, brain metastases, glioma, trigeminal neuralgia, thymoma, lung cancer, liver cancer, pancreatic cancer, esophageal cancer and more than 20 kinds of benign and malignant tumors and diseases). Gamma knife treatment is non-invasive, bloodless, painless, effective, light reaction, short hospitalization time, and some patients can return to work soon after gamma knife treatment, without the risks and complications of surgery. Because of the precise positioning of gamma knife treatment, many of the past had been regarded as a forbidden area of surgery (such as the brainstem, thalamus, lung door and other regional lesions and tumors) gamma knife can be successfully completed. In addition, gamma knife treatment without incision, no anesthesia, many patients with coronary heart disease, pulmonary heart disease, diabetes, hypertension, old and frail patients who can not tolerate surgical treatment, can also receive scientific and effective gamma knife treatment. Gamma knife has been used at home and abroad for more than 30 years, developed countries have long been widely used, the United States only the head static gamma knife has 88 units, the population of Japan has 58 units, at present, China has a total of 140 units of various types of gamma knife. Distributed in more than 20 provinces and cities.