Pilot Study to Evaluate Photoacoustic Imaging for Characterizing Breast Masses and Breast Tumor Response to Neoadjuvant Chemotherapy Pilot Study to Evaluate Photoacoustic Imaging for Characterizing Breast Masses and Breast Tumor Response to Neoadjuvant Chemotherapy

Cohort 1 - Neoadjuvant Chemotherapy Monitoring:

Men and women between 20 to 80 years of age with either a biopsy confirmed diagnosis of breast cancer and receiving neoadjuvant chemotherapy.

Cohort 2 - Breast Mass Characterization:

Men and women between 20 to 80 years of age suspected of having a mammary, benign or malignant mass and are schedule to undergo diagnostic and clinical work-up.

Cohort 1 - Neoadjuvant Chemotherapy Monitoring:

Inclusion Criteria:

• Subjects must give appropriate written informed consent prior to participation in the study;
• Subjects must be able and willing to comply with the safety procedures during the Scanning Period;
• Subjects must be men and women of between 20 to 80 years of age, inclusive, on the day the Informed Consent Form is signed;
• Subjects must be receiving neoadjuvant chemotherapy for locally-advanced breast cancer.
• Biopsy-confirmed diagnosis of locally advanced breast cancer; of all molecular subtypes (ER+/-, PR+/-, HER2+/-).

Cohort 1 - Neoadjuvant Chemotherapy Monitoring:

Exclusion Criteria:

• Subjects with a past medical history of abnormalities, significant injury, or medical or surgical procedures (e.g. Silicone/saline implants) involving either breast, exclusive of the lesion at issue;
• Subjects with any dermatologic abnormalities (including tattoos, open sores, or breached skin) involving either breast;
• Subjects with a current or past medical history of connective tissue disease;
• Subjects who are pregnant or lactating;
• Subjects with an implanted electronic device such as a cardiac pacemaker, defibrillator, or neurological stimulator;
• Subjects with a history or expectation of significant anxiety associated with undergoing diagnostic evaluations;
• Subjects with a history of musculoskeletal disease which may predispose them to discomfort during the Scanning Period;
• Subjects with a known sensitivity to low-power infrared radiation (e.g., as a result of a dermatologic condition); and
• Subjects, who, in the opinion of the investigator or clinical research coordinator, may not otherwise be appropriate for inclusion into the study.

Cohort 2 - Breast Mass Characterization:

Inclusion Criteria:

• Subjects must give appropriate written informed consent prior to participation in the study;
• Subjects must be able and willing to comply with the safety procedures during the Scanning Period;
• Subjects must be men and women of between 20 to 80 years of age, inclusive, on the day the Informed Consent Form is signed;
• Subjects must be referred to breast diagnostic clinic for investigation of a breast mass.

Cohort 2 - Breast Mass Characterization:

Exclusion Criteria:

• Subjects with a past medical history of abnormalities, significant injury, or medical or surgical procedures (e.g.,silicone/saline implants) involving either breast, exclusive of the lesion at issue;
• Subjects with any dermatologic abnormalities (including tattoos, open sores, or breached skin) involving either breast;
• Subjects with a current or past medical history of connective tissue disease;
• Subjects who are pregnant or lactating;
• Subjects with an implanted electronic device such as a cardiac pacemaker, defibrillator, or neurological stimulator;
• Subjects with a history or expectation of significant anxiety associated with undergoing diagnostic evaluations;
• Subjects with a history of musculoskeletal disease which may predispose them to discomfort during the Scanning Period;
• Subjects with a known sensitivity to low-power infrared radiation (e.g., as a result of a dermatologic condition); and
• Subjects, who, in the opinion of the investigator or clinical research coordinator, may not otherwise be appropriate for inclusion into the study.