Just wanted to add one comment here regarding Gadolinium contrast: When they inject it, it is bound to a chelating agent that prevents it from being absorbed. Then, (in theory) it is just removed and flushed out through your kidneys and into your urine. But, if you don't get it flushed out quick enough, it separates from the chelating agent, and absorbs into your body. And, once its there, its pretty much there for good.

The one thing that they are supposed to tell you (and in my case they did not) - is that it is important to drink a lot of fluids so that the contrast gets flushed out before it breaks down.

I was not told this, and I did not hydrate after the procedure. Although I had other symptoms before the MRI with contrast - I did not have the pain in my feet until shortly after. Of course I will never know for sure, but I do strongly suspect that the gadolinium really worsened my symptoms.