Photoacoustic Imaging of the Breast in Patients With Breast Cancer and Healthy Subjects

This study is evaluating a new breast imaging technology called photoacoustic imaging — which combines laser light and sound waves to produce detailed pictures of breast tissue and its blood supply — in women who have a suspicious or confirmed breast cancer mass and are already undergoing a breast MRI. **You may be eligible if...** - You are a woman with a clinically suspicious or confirmed breast cancer mass that has not been surgically removed - You are already scheduled for or have recently had a breast MRI - You are an adult able to provide consent **You may NOT be eligible if...** - You are pregnant - You have had breast implants in the past 6 months - You have had a lumpectomy (prior surgical removal of a breast lump) - You are a minor or unable to provide consent - You are incarcerated Talk to your doctor to see if this trial is right for you.