In the SBRT technique, which is mostly used in the chest, abdomen, and pelvis, controlling tumor movement, repeatability, and anatomical position is very important in order to preserve surrounding healthy tissues and achieve the highest radiation dose to the tumor. In addition, the use of vacuum bags and cushions in the aforementioned equipment is very widely used and important to give the desired position to the treatment area and also to stabilize it. Another reason for updating radiotherapy fixation and immobilization equipment is the comfort of the patient during the treatment period, the ease of positioning and fixation of the patient by the therapist for better treatment results.
In the SRS treatment technique, which is used to treat small brain tumors and high doses of radiation, patient fixation is of great importance. Given the high dose of radiation and the small size of the tumor, the error should be below 1 mm because the repeatability of the treatment position and anatomical position is of particular importance.
