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Eur J Radiol. 2013 Aug;82(8):1240-7. doi: 10.1016/j.ejrad.2013.02.037. Epub 2013 Apr 17.

Influence of observer experience and training on proficiency in coronary CT angiography interpretation.

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  • 1Department of Radiology and Radiological Science, Medical University of South Carolina, 25 Courtenay Drive, Charleston, SC 29425, USA.

Abstract

PURPOSE:

To assess the influence of experience and training on the proficiency in coronary CT angiography (CCTA) interpretation of practitioners with different levels of experience.

METHODS AND MATERIALS:

Nine radiologist and cardiologist observers with varying prior CCTA experience ranging from novice to expert independently analyzed two case series of 50 catheter-correlated CCTA studies for coronary artery stenosis (0%, ≤49%, 50-74%, 75-99%, or 100%). Results of the first case series were unblinded and presented along with catheter angiography results to each reader before proceeding to the second series. Diagnostic accuracy on a per-segment basis was compared for all readers and both case series, respectively.

RESULTS:

Correlation coefficients between CCTA and catheter angiography initially ranged between good (r=0.87) and poor (r=0.26), depending on reader experience, and significantly (p<0.05) improved in the second case series (range: r=0.42 to r=0.91). Diagnostic accuracy was significantly (p<0.05) higher for more experienced readers (range: 96.5-97.8%) as compared to less experienced observers (range: 90.7-93.6%). After completion of the second case series for less experienced readers sensitivity and PPV significantly (p<0.05) improved (range: 62.7-67.8%/51.4-84.1%), but still remained significantly (p<0.05) lower as compared to more experienced observers (range: 89.8-93.3%/80.6-93.3%).

CONCLUSION:

The level of experience appears to be a strong determinant of proficiency in CCTA interpretation. Limited one-time training improves proficiency in novice readers, but not to clinically satisfactory levels.

Copyright © 2013 Elsevier Ireland Ltd. All rights reserved.

PMID:
23601293
[PubMed - indexed for MEDLINE]
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