New Breast MRI Exam Helps Fight Breast Cancer. - The breast MRI exam, magnetic resonance imaging, has been available just over one year in the Valley. -The breast MRI exam is not recommended as a screening tool for the all patients. It is used for high risk patients. -Patients that are high risk have: •A history of cancer •A positive breast cancer gene •A positive mammogram and/or can feel a lump - As many as 10% of patients with breast cancer in one breast will have another lesion that ...