Determination of Scatter Radiation Round Three Different Models of Mammography Unit

Abstract : Purpose: this study was carried out to determine the amount of scatter radiation around three different models of digital mammography units may contribute to shielding calculations. Objectives: measuring and comparing for scattered radiation at four orientations (4 x 90o=360o) round three mammography models. Materials and methods: RADOS (RDS-120 Universal Survey Meter) device was used to measure scatter radiation at four orientations round three types of mammography digital models NM-GA, Liyum, and Mammomat. These orientations are backward, forward, left lateral, and right lateral. All measurements are taken in Craniocaudal projection. Results: backward orientation has highest and right lateral has lowest intensity of scatter radiations when three models of digital mammography were used. Mammomat model with backward orientation was at highest 6.5μSv of intensity and NM-GA model at lowest intensity of 1.1 μSv from right lateral orientation. Conclusions: The obtained measurements of scatter radiation at four different orientations may be used in a shielding calculation when NM-GA, Liyum, and Mammomat of mammography models are used.