As ovarian cancer is characterized by an anarchic neovascularization resulting in a wide number of immature microvessels. These vessels are characterized by a lack of coverage by pericytes and the higher expression of one of the receptors of Vascular Endothelial Growth Factor on both endothelial and epithelial cells of ovarian cystadenocarcinomas. These physio pathogenic characteristics have been demonstrated to be in line with variations of MR perfusion parameters.