 Gadolinium-based intravenous contrast agents are widely used for the enhancement of MRI findings. However, these agents have been implicated in varying degrees of nephrotoxicity and therefore are not usually used in patients with renal dysfunction. Gadoterate is a Gadolinium agent and previous studies have indicated that it is safe in patients with decreased kidney function. The purpose of this study is to evaluate the safety and efficacy of using Gadoterate in this patient population. 