I don't know what that is - is that the same as the stuff they use in those nuclear stress tests for the heart? IF so, I had the nuclear stress test with that dye, NOTHING happened at all. My mom had one, my dad had one, my neighbor had about 3 - NO one had any kind of reaction. If it's not the same, then sorry I couldn't help you with that.
But I CAN tell you you will be just FINE! You had the other MRI and all was well, this will be too.