Breast MRI does not replace mammography, but complements it. All breast MRI studies should be interpreted and correlated with a recent mammogram and often with a recent sonomammography.
Any breast MRI study intended to detect breast cancer or other pathology requires the injection of intravenous gadolinium contrast. Both breasts should be studied routinely since this modality detects cancer that is not clinically suspected in other breast studies in the breast as opposed to the one that is suspected or has already been documented to have a problem. It also detects cancer in other areas of the breast where cancer is suspected or already documented. This information may change the type of treatment to be followed. If there has been a mastectomy, total or partial, residual tissue, including the anterior chest wall, should be included.