Follow up on US FDA withdrawal of CardioGen-82

FDA told physicians to stop using the CardioGen-82 some time back after identifying an increased risk of radiation exposure, Following which it was withdrawn. Now US FDA says that "improper usage" of the generator at certain sites is the likely cause of radiation exposure to patients and not faulty devices.  According to them increased radiation exposure seen at specific sites was likely was due to the administration of CardioGen-82 generator eluates that contained excessive concentrations of strontium-82 (Sr-82) and strontium-85 (Sr-85).