The core technology of “radio wave knife” is to introduce “intelligent interactive robot” and “image navigation technology” into the field of tumor radiation therapy. The core technology is the introduction of “intelligent interactive robot” and “image navigation technology” into the field of tumor radiation therapy, which adopts “image navigation technology” similar to real-time satellite positioning and navigation to receive real-time information such as tumor location, normal organ location and respiratory movement in the patient’s body, and feed back to the “intelligent interactive robot”. The latter drives the miniaturized linear gas pedal to dynamically track the trajectory of tumor movement, avoiding the surrounding normal tissues, and can precisely focus the high-dose rays to the tumor lesion from 1200 directions in three-dimensional space, with the error range controlled within 1 mm, truly realizing the “real-time tracking, precise positioning, key strike and targeted removal” of the tumor lesion. It can achieve “real-time tracking, precise positioning, key strike and targeted removal” of tumor lesions. The clinical application of “radio wave knife” covers benign and malignant tumors in all parts of the body, especially for malignant tumors in the chest and abdominal organs, such as lung cancer, liver cancer, prostate cancer, etc., “radio wave knife” has significant advantages that other radiotherapy equipment cannot match. The infrared tracking technology can continuously monitor and record the motion of thoracic and abdominal organs and the chain relationship between organ motion and tumor three-dimensional spatial positioning, predict the trend of tumor motion in advance and monitor the position of tumor irradiation, which can minimize the unnecessary irradiation of normal tissues around the tumor, minimize the occurrence of radiation therapy complications and improve the quality of life of tumor patients. For intracranial and head and neck tumors that are relatively fixed, the full-angle irradiation capability of the “radio wave knife” can optimize the dose distribution in the target area, and the image guidance system can precisely see the tumor during each treatment, thus eliminating the need for an invasive fixed head frame and achieving the highest standard of treatment accuracy in stereotactic radiosurgery. The “radio wave knife” introduced by Wuhan Union Hospital Cancer Center is the fifth generation of international advanced “radio wave knife” VSI system (multi-functional intelligent radio wave knife), which is the only one “radio wave knife” in Central and South China. “Compared with the previous generations, the fifth generation “radio wave knife” has a higher output dose rate and is equipped with a number of new technologies such as automatic collimation system, which significantly improves the accuracy and stability of irradiation, and under the 4-dimensional “image navigation technology Under the precise positioning of 4-dimensional “image navigation technology”, it can carry out rapid and accurate stereotactic radiation treatment for tumor lesions. Workflow of radio wave knife: 1.Make thermoplastic mask. 2.Make a CT stereotactic scan of the treatment target area, and the reconstructed image is used as a standard for treatment plan design and correction of body position movement during treatment. 3.Design the treatment plan, including the three-dimensional outline of the tumor target area and crisis organs, and pass the doctor’s evaluation and confirmation. 4.The patient lies on the treatment bed and performs irradiation according to the treatment plan.