Risk is defined in 2 ways:
- Risk of mutation (If risk of mutation is 10% or greater consider genetic testing)
- Risk of breast cancer (If lifetime risk of breast cancer is 20% or greater get an MRI)
4% of your population getting mammography will need genetic testing
For MRI, about 15% of your population will need an MRI based on the models.
If you use Tyrer Cuzick7, about 15% will need an MRI.
If you use Claus, about 0.9% will need an MRI.
If you use BRCAPRO, about 0.5% will need an MRI.
Tyrer Cuzick is really the driver of MRIs.