My dr has suggested an X-ray defography. I believe I read somewhere in one of these posts, I could be mistaken as I read much everywhere!, but I thought it was advised not to use barium with a severely redundant/tortuous colon as to the possibility of the residual barium “hardening-up in all those bends and kinks and causing much difficulty after testing is completed. Anyone recall this or had this test done and had good or bad experience. My previous dr would have done MRI defography which does not use barium. My new dr feels xray gives much better results.