Photoacoustic Imaging of Human Breast

Inclusion Criteria: * Women with clinically suspicious or confirmed breast cancer masses (that have not been surgically removed) and will/have already undergo/undergone breast magnetic resonance imaging (MRI). Exclusion Criteria: * Pregnant women (there are no known risks to these procedures, but any unforeseen risks are as yet undetermined, so pregnant women will be excluded by means of a verbal confirmation at time of screening). * Women who have had breast implants in the previous 6 months. * Women who have had lumpectomy * Adults unable to consent. * Individuals who are not yet adults (infants, children, teenagers). * Pregnant women. * Prisoners. * There is no direct benefit of the study to any subject either non-English or English speaker. To facilitate the consent process, we will exclude non-English speaking subjects.