The gadiolium..Spelled? Is dye they use in mri of breasts. It lights up breast cancer. It is not good to use when people have muscular scoliosis. All I know is I had ILC 11mm in left breast and mammo did not show it. And ultrasound missed it. I luckily felt it. I had lumpectomy and no radiation .margins clear and lymph nodes clear. No hormone blocker for five years either. I also prior to breast cancer had small endometrial cancer again I had pelvic ultrasound after back mri said I had thickened endometrial lining 7mm. My cancer was small but dr. Said take ovaries uterus and all. I am 74. You have to be your own advocate. My surgeon said ILC of breast does not show up on mammo. It is like cobwebs webs. So no more mammos for me only mris and ultrasound. Yes the dye is bad but there is nothing else at this point.