The radiotherapy process includes making the fixed body membrane, scanning and positioning CT, outlining the target area, making the radiotherapy plan, repositioning before radiotherapy, and implementing radiotherapy. 1. Make fixed body membrane: Before radiotherapy, the body membrane will be made to help fix the patient on the treatment bed to ensure that the patient is in the same position every time the treatment is given, so as to ensure the accuracy of the treatment. 2. Scanning and positioning CT: The patient will be scanned and positioned CT under the fixation of the body membrane to obtain the CT image of the lesion area, which is convenient for the subsequent doctors to outline the target area and determine the treatment site. 3. Outlining the target area: Outlining the target area is the doctor’s job, the doctor will identify the lesion site on the localization CT image and decide the area to be irradiated by radiation, which will be outlined with different color lines to facilitate the identification of the subsequent physicists to make the radiotherapy plan. 4. Making the radiotherapy plan: making the radiotherapy plan is the work of the physicists, who will make the radiotherapy plan according to the target area outlined by the doctor and the prescribed dose, so as to realize the area that needs to be treated to achieve the therapeutic dose. 5. Repositioning before radiotherapy: After the radiotherapy plan is done, the radiotherapy plan will be repositioned to determine whether the repositioned image is consistent with the localized image, and whether there is a large error that needs to be adjusted, etc., to ensure the accuracy of the treatment. 6. Radiotherapy implementation: after the radiotherapy repositioning is completed, patients can go to the radiotherapy room for treatment every day as required. There are different radiotherapy techniques, such as three-dimensional conformal radiotherapy, stereotactic radiotherapy, etc. The process of different techniques may have some differences, for example, some stereotactic radiotherapy may need to implant markers into the lesion site, but the process is basically the same. If you are in need of radiotherapy, please consult the doctor in charge of radiotherapy at the hospital.