Average glandular doses reported by mammography units: how reliable are they?

Introduction. Average glandular dose (AGD) values displayed by mammography units are often used to compare doses with diagnostic reference levels, acceptable and achievable levels given in the European guidelines on breast cancer screening, or between units. The aim of work was check reliability AGD comparing them independently calculated values. Material methods. comparison performed for five units, 20 groups patients (50 each), examined various periods years 2015 2020. were same using results measurements. Results. Observed differences affected their levels. Conclusions. should be caution. If reliable information is needed, they