Comparison of the 2006 and 2010 cardiac CT appropriateness criteria in a real-world setting.

Background: Coronary CT angiography (CCTA) is a relatively new technique whose role has yet to be fully defined. The initial appropriateness criteria (AC) guidelines published in 2006 have already been revised. There is paucity of data on the effect of the AC on the use of CCTA at academic centers and none for the private sector.