Molecular Breast Imaging

More clarity when mammograms are not enough

Molecular breast imaging, also called MBI, is a breast imaging test used in addition to a mammogram. It helps doctors see breast cancer more clearly, especially in women with dense breast tissue. 

MBI can detect cancers as small as five millimeters, which may not be visible on a mammogram alone. 

Request an appointment

If needed, your care team will provide a referral for molecular breast imaging. 

Why molecular breast imaging may be recommended

Some women need more than a mammogram to get clear answers. MBI may be recommended if: 

• You have dense or complex breast tissue 
• A mammogram result was unclear or inconclusive 
• You are at moderate or high risk for breast cancer 
• You cannot have a breast MRI due to implants, claustrophobia or medical devices 
• You have a history of breast cancer and need follow-up imaging 
• Your care team needs to monitor response to chemotherapy 
• MBI is not a replacement for a mammogram. It is used as a secondary screening tool to provide more information. 

How molecular breast imaging works

MBI uses a small amount of a safe radiotracer that is injected into your arm. Cancer cells absorb this tracer differently than healthy tissue, helping possible tumors stand out more clearly.

What to expect during your exam:

• No special preparation is needed
• A low-dose injection is given before imaging begins
• You will sit comfortably while images are taken
• The breast is gently compressed between two cameras
• The exam takes about 30–45 minutes
• Images are available right away for your provider to review