Enrolled patients will undergo two separate dynamic contrast-enhanced MRI's, one with 25% of the contrast dose and one with 100% of the contrast dose recommended by weight. During the first visit, the subject will receive 25% of the standard dose of contrast media 0.1 mM/kg will be administered at 2 mls/second followed by the acquisition of a series of DCE images. On the second visit, the subject will receive 100% of the contrast media followed by the same imaging protocol as the one subsequent to the first contrast administration.

We are comparing MRI image quality for diagnostic purposes. We hope to learn whether using a lesser dose (25%) of the FDA approved contrast agent, Gadavist®, is just as effective as a standard or full dose (100%) of the same contrast in a breast MRI.

This research is being done because breast MRI's have repeatedly been shown to represent the most reliable imaging method for breast cancer screening and diagnosis, regardless of personal risk for breast cancer and radiographic breast density. However, there are growing concerns about getting frequent breast MRI examinations due to the deposition of gadolinium, a metal ion that is found in all breast MRI contrast agents. The FDA states that this deposition and retention is not known to have any long term side effects on patient. However, the researchers at the University of Chicago Medicine would like to further investigate this using a lesser dose of contrast agent than the recommended dose for breast MRI examinations.

Readers will initially be provided with two MIP images and asked to decide on presence or absence of significant enhancement. The two MIP images will be created from the low dose images and the standard dose images respectively.