RT Journal
A1 Price JM
T1 RAdiation doses associated with cardiac computed tomography angiography
JF JAMA
JO JAMA
YR 2009
FD June 10
VO 301
IS 22
SP 2324
OP 2325
DO 10.1001/jama.2009.762
UL http://dx.doi.org/10.1001/jama.2009.762
AB 
The vast majority of CT studies of all sorts are ordered by clinicians, and I believe that it is a rare physician ordering standard-type CT scans (such as abdominal studies) who has the slightest idea of the actual level of total radiation to which the patient is being exposed. It appears that the general US population is receiving unrecognized exposure to very large total doses of radiation from CT scans of all sorts. The authors specifically noted that radiation exposure from CCTA has a “small but potential risk of cancer induction. Many clinicians may still be unfamiliar with the magnitude of radiation exposure that is received during CCTA in daily practice.” There should be an educational program for clinicians to acquaint them with the likely doses of radiation exposure that their patients are receiving from CT scans.