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
Coronary artery angiography Cardiac Catheterization and Coronary Angiography Cardiac catheterization and coronary angiography are minimally invasive methods of studying the heart and the blood vessels that supply the heart (coronary arteries) without doing surgery. These... 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 locations.
CT = computed tomography.