Inclusion Criteria:
A. Subjects who are asymptomatic and scheduled to undergo routine screening mammography
OR
B. Subjects scheduled for image guided needle biopsy as a result of findings obtained during standard of care imaging modalities
AND
C. Subjects has a prior mammogram and have been diagnosed with extremely or heterogeneously dense breast tissue (Density C or D)
Exclusion Criteria:
- Male by birth.
- Individual is less than 30 and greater than 70 years old.
- Contraindication to bilateral mammography or MRI
- Subjects who are unable to read, understand and execute the informed consent procedure.
- Subjects who have had mammography ultrasound or MRI examination performed on the day of the study prior to MIRA scan.
- Subjects who have significant existing breast trauma.
- Subjects who have undergone lumpectomy/mastectomy.
- Subjects who have undergone breast reduction or breast augmentation.
- Subjects who have undergone any other type of breast surgery, excluding surgical biopsy.
- Subjects who have large breast scar / Breast deformation
- Subjects who have undergone a breast needle biopsy or a surgical biopsy within the 6 month period prior to their intended enrollment into the study.
- Subjects who have a temperature > 100° F (37.8C) degrees on the day of the MIRA imaging
- Subjects who are pregnant or lactating
- Subjects with known Raynaud's Disease
- Subjects that are claustrophobic or have physical limitations that do allow them to sit in the system chair for the required imaging session.
- Subjects with implanted pacemaker/defibrillator, implanted venous access device (portacath) or other implanted devices
- Subject with kidney failure
- Subject with known allergy to gadolinium
- Subject with a history of multiple contrast MRI scans (more than 4 MRI scans over the past two year)
- Inmates (45 CFR 46.306) or mentally disabled individuals
- Subjects with a BI-RADS category 6 (e.g. for which mammogram was performed for the purpose of planning cancer therapy)
- Subjects currently participating in another investigational clinical study
- Subjects who participated in the Calibration Phase will not be able to participate in the Testing Phase