Kim Sang-Tae, Cho Jung-Keun
Radiation Safety Division, Nuclear Safety and Security Commission, Seoul, Korea.
Department of Radiological Science, Jeonju University, Jeonju, Korea.
Technol Health Care. 2014;22(3):345-50. doi: 10.3233/THC-140790.
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.
乳腺腺组织是一种对辐射敏感的组织。因此，在评估X射线乳房造影设备时，平均腺剂量（AGD）测量是非常重要的一部分。实际上，直接测量AGD很困难，因此使用蒙特卡罗模拟来分析AGD与乳房厚度之间的相关性。结果，通过蒙特卡罗模拟计算出的AGD分别为1.64、1.41和0.88毫戈瑞。模拟的AGD主要取决于乳房的腺体比例。随着乳腺腺组织的增加，低光子能量的吸收增加，AGD也随之增加。此外，乳房越厚，AGD越高。因此，本研究将作为建立乳房造影诊断参考水平的基础数据。
