Contribution of MRI in the Evaluation of Apparent Diffusion Coefficient and Prediction of Response to Neoadjuvant Chemotherapy in Breast Cancer

Inclusion Criteria: * Age\> 18 years. * Patient suffering from a breast tumor, regardless of the stage and size * Patient requiring neoadjuvant chemotherapy * Patient has the ability to undergo 18F-FDG-PET at baseline, at end of cycle 1 and at the end of neoadjuvant treatment before surgery * Compulsory affiliation to a social security system. * Obtaining informed consent in writing, signed and dated. Exclusion Criteria: * Patient with cognitive or psychiatric disorders. * Patient deprived of liberty by a court or administrative. * Patient with signs against the achievement of MRI, mammography and ultrasound * Patient metastatic * Patient with prior chemotherapy, radiotherapy and hormone therapy for her breast cancer * Pregnant women, current lactation * Patient suffering from uncontrolled diabetes (\> 11 mmol / L)