MRg-NIRS Imaging System Breast Cancer Trial

Inclusion Criteria: 1. Females age ≥ 18 years old 2. Participants capable of providing written informed consent 3. Women with a recent diagnosis of breast cancer. 4. Women who are in pre-surgical planning must have an estimated tumor size of 2.0 cm or less on available imaging. 5. Women who are in pre-surgical planning must have had a breast biopsy at least 10 days prior to the MRg-NIRS exam. Exclusion Criteria: 1. Participants with absolute or relative contraindication to MRI: 1. the presence of an electronic implant, such as a pacemaker 2. the presence of a metal implant, such as an aneurysm clip 3. claustrophobia 4. renal failure (FDA's guidance for gadolinium of a creatinine clearance less than 30 mL/1.73 m2 BSA) 2. Pregnant women 3. Breast implants 4. Prisoners 5. Participants with visually inadequate healing from breast biopsy.