Hi Cordelia and if I haven't welcomed you to NT, consider yourself welcomed!! Just speaking from my own experience with MRI's, I never had the spasm thing happen that you mentioned. One time the tech must not have gotten all the dye into my veins as it leaked out into the tissue causing me to have horrible pain, even nausea from so much pain. That wasn't fun. Could your spasm have been caused by lying flat and still for 45 minutes?

Those rooms are usually on the cool side and I have more problems with spasticity in cool/cold weather. Sorry I can't be of more help but do hope you get some results soon....