This course is ASRT approved for 27.25 category A CE credits and serves as an introduction to the understanding of why benign disease or breast cancer looks the way they do on the mammogram, the ultrasound, and the MRI. The book has a chapter dedicated to the use of each breast imaging modality, including mammography, ultrasound, MRI, and nuclear medicine. Each modality is discussed with reference to a spectrum of applications that includes screening, diagnosis, surveillance, interventions, and assessment of therapeutic efficacy.