Different imaging procedures expose patients to different amounts of radiation. Projection radiography procedures, such as a chest x-ray or mammography, use relatively low amounts of radiation.
CT scans and fluoroscopic procedures involve multiple or extended exposures to radiation. For this reason, these types of exams are associated with a higher radiation dose than projection radiography.
Radiation Doses from Various Types of Medical Imaging Procedures
(1 Chest X-ray = 0.02 mSv)
|Type of Procedure||Comparable Number of Chest X-rays|
|Dental X-ray||0.25 - .5|
|CT||100 - 800|
|Interventional Fluoroscopy||250 - 3500|