liver magnetic resonance imaging
"I believe this is the safest MRI contrast currently marketed.  It is a 4th generation contrast with a dual excretion pathway and as far as I know there are no know cases of NSF associated with this.  The few minor side effects I have seen are similar to placebo.  The key is the low dose of gadolinium and the 4th generation liver excretion which makes this safe in patients with renal compromise and still have normal liver function."