The Profit from Electronic Portal Image in Radiotherapy

Abstract

          The Electronic Portal Imaging (EPI) is an important part of radiation treatment management. The EPI devices can be used routinely to check and correct beam treatment area and patient positioning before much of the daily irradiation has been delivered. The EPI by using video camera for imaging was used instead to film. The image from video camera imaging is high resolution more than port film but imaging is less resolution than x-ray film. Radiation oncologists who compare the both image between EPI taken on a high energy treatment machine and X-ray films taken using much lower energy x-ray by using anatomy landmark for indicated boundary area treatment for example, bone landmark and air cavity. In this report show the EPI study by using PORTpro machine combine with Linear accelerator 6 MV to portal image of the pelvis treatment volume in female patient that have body thickness approximately 20-30 cm. Total 20 patients by double exposure technique