Comisionmiento y puesta en marcha del acelerador lineal digital de alta energía Elekta Synergy para rayos X en el departamento de radioterapia del hospital Carlos Andrade Marín

Abstract

The commissioning and start-up of the Elekta Synergy linear accelerator for X-rays was carried out at the Radiotherapy Department of the Carlos Andrade Marín Hospital (HCAM) in the city of Quito. With the help of the Deductive Method we started from general concepts in Medical Physics to specific concepts such as absorbed dose, absolute and relative magnitudes of radiotherapy, the Inductive Method; The Inductive Method of reasoning contributed to formulate the conclusions, through the Structured and Bibliographic Observation Technique, the necessary information was collected, the Beam Data Collect List guide, Task Group - 106 report of the American Association of Medical Physicists (AAPM), Technical Report Series (TRS) - 398 and TRS - 430 of the International Atomic Energy Agency (IAEA) were understood and applied. Radiation detectors, phantoms and electrometers were used to perform the measurements, using the TG - 106 protocol, taking into account the correct way to position the detectors inside the phantom and several factors such as sensitivity and response of detectors, leakage radiation, scanning speed, among others. Subsequently, the accelerator was calibrated using the TRS - 398 report, obtaining 1.0016 cGy/MU with 6 MV and 1.0034 cGy/MU with 15 MV and the monitor units (MU) calculated by the Planning System and dose measured in vivo were verified; the results obtained are within the tolerance limits recommended by the TRS - 430 report. It is concluded that the linear accelerator is ready for clinical use because it complies with all the parameters recommended by international protocols, it is recommended to use the results of this work as a reference if a re-commissioning of the equipment is required.