Cheaper way to diagnose breast cancer other than ultrasound?

Density,age,fam hx: No and ultrasound alone can't detect all breast cancer. Under 30yo w no fam hx, ultrasound is a good first test. Over 40yo with dense breasts (40% of women) than a 3d tomosynthesis mammogram or 2d mammogram with breast ultrasound. Over 40, not dense, than 2d mammogram. If you have fam hx of breast cancer then you should speak with your doctor about yr risk and possible MRI.