DEAR DR. ROACH: Due to a slight genetic risk of breast cancer (my Tyrer-Cuzick Model score was 20.6 percent), my doctor wants me to get breast MRIs with contrast annually. I am concerned about long-term exposure to the gadolinium-based contrast dye. I’ve learned that this heavy metal is considered safe, but traces of it can be stored in the brain and other body tissues.
I am 49 and in very good hea…