Abstract 3081: Accuracy Of Cardiac Ct Angiography As A Function Of Reader Experience
The accuracy of CT angiography as a function of reader experience has not been reported thus far. The ACC/AHA guidelines for competence in cardiac CT angiography mandate minimum experience of 150 and 300 cases for level 2 and level 3 respectively. We examined a series of 2000 patients of which 229 patients underwent coronary angiography. The study interpretations were performed by three readers with markedly different levels of experience. We analyzed the results by quartiles (500 patients each). The first 500 patients were also separated according to the ACC/AHA guidelines for competence (i.e. 1–150, 151–300, 301–500). We found a significant difference in the number of patients referred for cardiac catheterization between operators with experience of less than 500 cases versus operators with experience of more than 500 cases (P< 0.0001). The difference did not reach significance for operators with experience of < 150 cases vs. operator with 300 –500 cases experience. A notable but non statistically significant difference was noted between the percentage of patients intervened upon (by either percutaneous or surgical means) as a function of the level of experience of the operator. The data suggests that 500 cases may be a better cutoff value for establishing competency in Cardiac CT angiography.