I had an MRI about a week prior to an angiogram to determine if I was ischemic. The cardiologist and electrophysiologist both wanted to rule out ischemia before subjecting me to what would have been an unnecessary catheterization if ischemia were proven. The problem was atrial fibrillation (AF in the medical establishment). I do not recall having any dye injected, nor did I have to ingest anything. I was injected with a radio-opaque dye for two MIBI stress tests on a treadmill. Each time it was a CT scan, though.