centex to houston agian

Hello all,
Well on tue. wend. and thur. I get to stay in Houston Texas and visit my "freinds at M D Anderson for some more testing.
This time it is once again CT scans with barium for contrast to check chest,abdomin, and pelvis.
If everything comes back with no signs of cancer, this will be, once again cause for celebration. If not I'll just have to work harder.I believe everything is going to be cool,But I seem to stress every time I have to go through this routine.
I think, if its all good this time around,I'm going to tell them this is the last time this year I'm doing it.See ya next year doc.
Im starting to get concerned about the contrasts they are putting in me,Barium for CT scans and Iodine for MRI's.Does anyone know any facts about the affects of these substances?
Well folks, I'll check back in when I return and let you all know how it went.
God bless and stay healthy,
Butch

P.S. Reading these posts and writing my story on this forum has quite a calming affect,Hmmmmm.