MKI67 and neoplasm: The aim of this study was to select radiomic features extracted from a DCE-MRI protocol, including precontrast images, pharmacokinetic parametric maps, the auxiliary R1 map, and delayed postcontrast images, to evaluate their prediction power in the differentiation of molecular receptor status, ki67 levels, and tumor grade obtained by immunohistochemical analyses in a dataset of invasive ductal carcinoma patients.