radio-therapy.jpg A patient activated an airport radiation detector alarm, after about six weeks of receiving radioiodine treatment. Treatment of diseases with radiotherapy involves use of x-rays or injecting radioisotopes to the body, which makes the patients temporarily radioactive.

Experts say that Patients receiving Iodine -131 therapy should be extra careful because at airports, as they may trigger an alarm up to 95 days after treatment. All patients who receive the radiotherapy treatment should request for a radionuclide card, which includes information about the patients treatments and also information for security staff such as "Airport alarms may be triggered for up to 12 weeks after receiving your therapy dose."

The card also helps avoid many embrassing movements at airport security checkpoints. Radiotherapy patients are also advised to avoid close contact with other people and avoid conception.