Survey of mean glandular in mammography practice in hospitals in central Region of Thailand

Abstract

       Survey of mammography practice in the hospitals in region of Thailand following the International Code of Practices recommended by IAEA to check quality of Mammogram X-ray unit that consists of two components including control of the quality of radiographic by using the PMMA Phantom and ACR Mammo Phantom, density 4.5 cm. as well as measuring tube loading output Entrance Skin Air Kerma (ESAK) In mGy/mAs unit and HVL (Half value layer) by using the calibrated X-ray machine. Hospital’s officers have to record the data of breast radiograph. The focus to film distance or image and patient’s breast thickness were used to calculate Average Glandular dose (AGD). From the survey of Mammogram X-ray showed that the kVp used was between 25-29 kVp, the mA x time in the exposure was between 55-176 mAs, and the focus to film distance was between 56-65 cm. The patients’ breast thickness was between 3.6-6.9 cm and the age of patients was between 40-60 years old. It was found that the AGD was 2.5 mGy which was not more than the reference value recommended by IAEA (3 mGy) but the ESAK was 12.9 mGY which was higher than the reference value of IAEA (11 mGy)