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Item Open Access The determination of calibration and correction factors for dose calibrators on 90y activity measurement(Mahidol University. Mahidol University Library and Knowledge Center, 2022) Dararat Phomtum; Putthiporn Charoenphun; Krisanat Chuamsaamarkkeebe beneficial for the routine clinical practice of the 90Y treatment to obtain accurate activity measurement of 90Y because currently the patient’ administrated doses should be within ±5% of the prescribed doses according to national recommendation.... from the measurement experiment. The percentage error results showed that 90Y activity measurements in the shipment container, 3-mL plastic syringe and 10-mL glass vial were mostly inaccurate when the containers used for initial calibrating dose