Approximate Number of Chest X-Rays Needed to Get the Same Dose
Approximate Environmental Exposure Equivalent to the Dose†
An x-ray series of the lumbar spine
CT of the head
CT of the abdomen/pelvis
Coronary artery angiography Cardiac Catheterization and Coronary Angiography Cardiac catheterization is a procedure that can measure heart function through a catheter inserted into a vein or artery and guided into the heart. Coronary angiography, which can be done during... read more during cardiac catheterization
* These doses account for how much radiation is delivered and how susceptible the body part exposed to radiation is to radiation damage.
† People are exposed constantly to low levels of naturally occurring radiation but the amount varies in different geographic locations.
CT = computed tomography.