Quality control assessment of Philips digital radiography and comparison with Spellman and Samsung systems in Tehran Oil Ministry HospitalNavid Banihashemi, Jamshid Soltani-Nabipour, Abdollah Khorshidi and Hossein MohammadiEur. Phys. J. Plus, 135 2 (2020) 269DOI: https://doi.org/10.1140/epjp/s13360-020-00275-1