How much radiation
Breast CT uses X-rays, like a compression mammogram. A breast CT scan delivers about 5.8 mGy per breast, and published studies report about 5.1 to 7.5 mGy depending on breast size and density. A diagnostic compression mammogram is typically 4.3 to 10 mGy. That puts breast CT in the same range, and far below a full-body CT.
If you're pregnant or breastfeeding
Tell us before your scan. Our radiologists will decide whether breast CT or another option is right for you.
Sources
- Siddall, Zhang and O'Connell, "Emerging clinical applications for cone-beam breast CT," Current Breast Cancer Reports, 2024.
- Manufacturer product information.