PGR and neoplasm: In this study, we analysed a highly heterogeneous cohort of imagingand patient parameters: (a) age range of women from 21 to 89 years and seven races(b) tumours of all TNM sizes, nuclear grade, OR, PR, and HER2 status (c) 10different combinations of magnetic field strengths and scanner manufacturers (d) 3different types of contrast agents were used for the patients (e) range of valuesapplied for image acquisition in terms of slice thickness, repetition times, echotimes, acquisition matrices, flip angles and FOVs (e) eight different expertradiologists served as readers.