2. Dental radiographer. "Dental radiographer" means a person, other than a licensed practitioner, whose duties include radiography of the maxilla, mandible and adjacent structures for diagnostic purposes and who is licensed under chapter 16.

3. Ionizing radiation. "Ionizing radiation" means gamma rays and x rays; alpha and beta particles, high-speed electrons, neutrons, protons and other nuclear particles; but not ultrasound, sound or radio waves, magnetic fields or visible, infrared or ultraviolet light.

4. License. "License" means a certificate issued by the board authorizing the licensee to use radioactive materials or equipment emitting ionizing radiation on human beings for diagnostic or therapeutic purposes in accordance with the provisions of this Act chapter.

4-A.__Licensed physician.__"Licensed physician" means a person licensed to practice medicine or osteopathy in this State.

5. Licensed practitioner. "Licensed practitioner" means a person licensed to practice medicine, dentistry, chiropractic, podiatry or osteopathy in this State.

6. Nuclear medicine technologist. "Nuclear medicine technologist" means a person, other than a licensed practitioner, who uses radionuclide agents on human beings for diagnostic or and therapeutic purposes.

7. Nuclear medicine technology. "Nuclear medicine technology" means the use of radionuclides in vivo on human beings for diagnostic or and therapeutic purposes under the supervision of a licensed physician. The use of radionuclides on human beings for diagnostic and therapeutic purposes includes the use of dual imaging devices.__For purposes of this subsection, "use" means all activities involved in the application of radioactive material.__These activities include, but are not limited to, adjusting equipment settings, positioning the patient, positioning the equipment and positioning the image receptor.

8. Radiation therapist. "Radiation therapy technologist therapist" means a person, other than a licensed practitioner, who applies ionizing radiation to human beings for therapeutic and simulation purposes, excluding the administration of radiopharmaceuticals.