Experimental characterization and Monte Carlo simulation of radiation dose in mammography by AGMS-DM+ and OSL nanoDot™ detectors

摘要

This work relates to the study of mean glandular dose (MGD) from the measurement and simulation of the entrance surface dose (ESD) using a standard mammography system. ESD has been simulated with the Monte Carlo Simulation code (GEANT4/GATE) for Molybdenum anode/Molybdenum filter (Mo/Mo) in a photon range 26 to 32 keV, and in a current range 40 to 80 mAs. Agreement within 3% between simulations and experimental measurements with two types of commercial detectors, AGMS-DM+ (Solid State kV/Dose Multisensor) and OSL aluminum oxide doped with carbon (Al2O3:C) type nanoDot™ (Landauer Inc.) results have been obtained. Results show that Monte Carlo simulation can be used to optimize the absorbed dose in order to reduce radiological risks in mammography clinical applications.