Non-ionizing radiation is extensively used in medicine for diagnostic and therapeutic purposes. Health risks from exposure to different sources of non-ionizing radiation are still not well known. High exposure to non-ionizing radiation produces acute effects on sensitive organs, mostly depending on radiation intensity, frequency and exposure duration. Prolonged low-level occupational exposure may also be hazardous. It is therefore necessary for the medical personnel to be aware of their occupational risk and to know how to apply protective measures in order to protect own health as well as that of the patients.