UPI: Residual radiation can trigger security devices, Ackerhalt says

An article distributed by UPI reports that a person who undergoes medical tests that include use of radioactive material may have enough residual radiation in his or her body to trigger security devices as long as three months after the test and quotes Robert Ackerhalt, professor of nuclear medicine, who said, "This is not an uncommon problem. We had a case where a man underwent a test requiring I-131 and for the next two weeks, his car was stopped as he crossed the border between the United States and Canada. We routinely give patients cards explaining they have had these procedures." Go to article.