Phantom-Based Comparison of Image Quality and Average Glandular Dose in Digital Mammography Systems

This study evaluates and compares image quality and average glandular dose (AGD) across six digital mammography systems from Siemens, GE, and Hologic, using standardized phantom testing in a clinical environment. Methods: Images were acquired with the Pro-MAM Accreditation FF phantom and PMMA slabs (2–6 cm) to simulate different breast thicknesses. All systems operated in Auto Filter mode. Signal-to-noise ratio (SNR) and contrast-to-noise ratio (CNR) were measured from phantom images. AGD, kVp, mAs, and ACR scores were recorded. Results: All systems passed ACR phantom image quality criteria. GE Prestina demonstrated the highest SNR values across thicknesses with efficient dose performance. Siemens systems showed consistent balanced results. Hologic systems performed adequately but limited access to raw data restricted detailed analysis. AGD values varied significantly between systems but were within clinical limits. Conclusions: All systems achieved acceptable image quality and dose levels according to clinical standards. However, significant variability in SNR and AGD performance was observed, highlighting differences in optimization among vendors.