Contrast Enhanced Spectral Mammography vs. MRI for Breast Cancer Screening

Mammography is the main way to help find breast cancers early so they can be treated. Unfortunately, mammography does not work as well in women who have dense breast tissue or who are at high-risk for breast cancer. In these women, breast MRI is also used to help find breast cancers.

Contrast enhanced mammography is a new type of mammogram. It uses contrast material combined with the mammogram to highlight areas that might be breast cancer and that could be missed on the mammogram alone. This is similar to breast MRI.

For this study, participants who had both CEM and MRI evaluating a finding that initiated from a screening exam will be included. Radiologists will compare the images to see if the contrast enhanced mammograms and the breast MRI find the same number of breast cancers. If the investigators find they perform similarly, then contrast mammography may be used to aid in breast cancer screening in the future.

Inclusion criteria

• CESM and MRI exam performed within 3 months of one another.
• CESM and breast MRI exams must be performed as part of imaging work-up based on a screening exam of any type (mammography, tomosynthesis, ultrasound, and MRI)
• CESM studies will include at least four low energy and four recombined images (LCC, LMLO, RCC, RMLO).
• MRI exams will include at least fluid sensitive sequence, multi-phase T1-weighted

Exclusion criteria

• Imaging sets with implants.
• Imaging sets in which a biopsy or surgical intervention was performed since the most recent screening exam, prior to acquisition of the study MRI or CESM.
• Imaging sets in which a biopsy was recommended, but biopsy was not performed and 2 year imaging follow-up is not available