exposure to radiation exposure exposure to radiation exposure to radiation low-dose computed tomography exposure to radiation exposure to radiation low-dose computed tomography Radiation in Medicine: Medical Imaging Procedures exposure to radiation exposure to radiation exposure to radiation Radiation in Medicine: Medical Imaging Procedures http://www.cdc.gov/nceh/radiation/ionizing.htm low-dose computed tomography exposure to radiation Radiation in Medicine: Medical Imaging Procedures exposure to radiation patient safety exposure to radiation