Thin CaSO4:Dy thermoluminescent dosimeters for calibration of 90Sr+90Y applicators

► Absorbed dose rates were obtained for 90Sr+90Y applicators using CaSO4:Dy pellets. ► Depth-dose curves were obtained for all studied applicators. ► CaSO4:Dy dosimeters presented satisfactory results in all realized tests. ► A mail dosimetry system was developed with CaSO4:Dy pellets.