Barium used in diagnostic radiology is in the insoluble sulfate form.
Consequently, it never leaves the gut and is eliminated by fecal excretion.
I know of no toxicity resulting from barium sulfate use in medical tests.
Dr. Charles A. Miller, rellim at mailhost.tcs.tulane.edu
Bionet.Toxicology News Group Discussion Leader
Dept. Environmental Health Sciences
Rm. 374, Center for Bioenvironmental Research
School of Public Health and Tropical Medicine
Tulane University Medical Center
1430 Tulane Ave. Box SL29
New Orleans, LA 70112
Ph. 504-585-6942, Fx. 504-585-6939