Monte Carlo simulation for correlation analysis of average glandular dose by breast thickness and glandular ratio in breast tissue.
A glandular breast tissue is a radio-sensitive tissue. So during the evaluation of an X-ray mammography device, Average Glandular Dose (AGD) measurement is a very important part. In reality, it is difficult to measure AGD directly, Monte Carlo simulation was used to analyze the correlation between the AGD and breast thickness. As a result, AGDs calculated through the Monte Carlo simulation were 1.64, 1.41 and 0.88 mGy. The simulated AGDs mainly depend on the glandular ratio of the breast. With the increase of glandular breast tissue, absorption of low photon-energy increased so that the AGDs increased, too. In addition, the thicker the breast was, the more the AGD became. Consequently, this study will be used as basic data for establishing the diagnostic reference levels of mammography.
Radiation Safety Division, Nuclear Safety and Security Commission, Seoul, Korea.
Sang-Tae
ST
Kim
Department of Radiological Science, Jeonju University, Jeonju, Korea.
Jung-Keun
JK
Cho
D001940:Breast / Q000033:anatomy & histology*; D005260:Female; D006801:Humans; D008327:Mammography / Q000379:methods*; D009010:Monte Carlo Method; D011829:Radiation Dosage
Glandular; Monte Carlo simulation; average glandular dose; breast thickness