Gamma Knife uses cobalt-60, which can produce gamma rays, as the radiation source. Using the principle of geometric focusing of rays, the planned high-dose gamma rays are concentrated on the pre-selected target (lesion) in the body under precise stereotactic situation, and the target tissue is destroyed after one or more irradiation (treatment) to achieve the therapeutic effect of surgical resection or destruction of the tumor lesion, while protecting the surrounding tissues of the lesion. normal tissue around the lesion. Body Gamma Knife is a gamma-ray stereotactic radiation therapy system, which is a stereotactic radiosurgery treatment device integrating stereotactic technology and radiosurgery technology, mainly for the treatment of body diseases. Body Gamma Knife can achieve high dose, high precision, high efficacy, low damage treatment effect, and perfectly realize the purpose of precise focus and conformal radiotherapy. Body Gamma Knife treatment indications include: 1, primary lung cancer and lung metastases; 2, primary liver cancer and liver metastases; 3, pancreatic cancer, gallbladder cancer and bile duct cancer; 4, lymph node metastases in the neck, lung, mediastinum, abdominal cavity and pelvis; 5, esophageal cancer, cardia cancer and mediastinal tumors; 6, primary bone tumors and bone metastases; various sarcomas; 7, kidney cancer, rectal cancer, bladder cancer, prostate cancer; 8 Lymphoma, malignant thymoma; 9, gynecological tumors, such as cervical cancer, ovarian cancer, etc.