Comparison of CE-DBT and MRI in Patients With Known Breast Lesions

Inclusion Criteria: * Women at least 18 years old * Planned or received conventional breast MRI at UNC Hospitals within 3 months prior to or after the research scan * Suspected breast lesion based on prior imaging (BIRADS 4 or greater) * Able to provide written informed consent Exclusion Criteria: * Severe untreatable claustrophobia * Implanted metallic devices, parts, vascular clips, or other foreign bodies (including breast implants) * Known hypersensitivity to iodinated contrast agent or to any component of iodinated contrast refractory to standard medications (antihistamines, steroids) * Impaired kidney function (serum creatinine level \> 1.8 mg/dl or a glomerular filtration rate \< 60 as approximated using serum creatinine levels within the last 30 days prior to the research scan) unless anuric and on dialysis * Any woman who is pregnant or has reason to believe she is pregnant (the possibility of pregnancy has to be excluded by negative urine β-HCG results, obtained within 24 hours prior to the research scan, or on the basis of patient history, as defined by the UNC IRB SOP 4801)