Research has been carried out on the dosimetry verification of the AAA algorithm on the Eclipse Treatment Planning System based on variations of the multileaf collimator. The study was conducted using energy 6 MV with a dose of 2 Gy. The multileaf collimator was varied into six groups with the size of the irradiation field used was 20 x 20 cm2. https://journeysgiftes.shop/product-category/general/