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Background: Mammographic screening for breast cancer has been proved to reduce mortality. However, because of the potential harm of ionizing radiation, radiation dose management has been issued. Objectives: We investigated the influence of several factors on the radiation dose change in full-field digital mammography (FFDM) using a radiation dose management system in Korean women. Patients and Methods: Using an existing radiation dose management system (RadimetricsTM), radiation dose tracking, monitoring, and statistical analyses were conducted. Information including parameters, utilization data, and a dose report were sent to the conventional picture archiving, communication system, and radiation dose management system. We reviewed the data and compared the parameters (exposure, glandular dose, compression thickness, and compression force) between two different devices, among classifications (plain, spot and magnification view, and implant), and between control modes (auto and manual). An association between compression thickness and glandular dose was evaluated. Finally, the glandular dose differences based on age, device, classification, control mode, exposure, compression thickness, and compression force were additionally investigated. Results: From February 25th to June 30th, 2015, a total of 15665 mammogram images of 3958 patients were performed and sent to the conventional picture archiving and communication system (PACS) and the radiation dose management system. A significant difference was observed in glandular dose, compression thickness, compression force, and exposure depending on the type of device (P < 0.05). There were significant differences in all of the parameters among the plain view, spot and magnification view, and implant image (P < 0.05). There was a significant difference in compression thickness and compression force depending on the control mode. A strong association was observed between the compression thickness and glandular dose (P < 0.05). Conclusion: There was glandular dose difference according to specific factors including device type, classification, and control mode. Radiation dose management system is useful for identifying factors that affect radiation dose.

Glandular Dose of Full Field Digital Mammography in Korean Women Based on Specific Factors