Background: As compared to the flattened photon beam. removing the flattening filter (FF) from the head of a gantry decreases the average energy of the photon beam and increases the dose rate. leading to an impact on the quality of treatment plans. Objective: This study aimed to compare the quality of intensity-modulated radiation therapy (IMRT) treatment plans for esophageal cancer w... https://www.rxkaitori.com/product-category/osram-qt-ballasts-2/