RT Journal
A1 Wittig G
T1 EValuating other diseases with computed tomographic screening for lung cancer
JF JAMA
JO JAMA
YR 2013
FD February 20
VO 309
IS 7
SP 655
OP 656
DO 10.1001/jama.2012.157202
UL http://dx.doi.org/10.1001/jama.2012.157202
AB 
The authors conceded technical problems in attempting to derive CAC scoring from CT scans not optimized for cardiac imaging. Even dedicated calcium scoring CT scanning has not proved cost-effective or useful for widespread screening.3 The use of CT scans for osteoporosis screening is problematic compared with the better standardized dual-energy x-ray absorptiometry (DEXA). Extensive research would be required to correlate incidental thoracic vertebral imaging with existing lumbar/hip DEXA, with no guarantee it would prove clinically useful. In addition, identification of early COPD by CT scanning, given the fact that cessation of tobacco use is the relevant intervention for the overwhelming majority of patients, does not seem to be a wise use of resources.