Using computed tomography enterography to evaluate patients with Crohn's disease: what impact does examiner experience have on the reproducibility of the method? / Avaliação da doença de Crohn por meio da enterografia por tomografia computadorizada: qual o impacto da experiência dos examinadores na reprodutibilidade do método?
Burlin, Stênio; Favaro, Larissa Rossini; Bretas, Elisa Almeida Sathler; Taniguchi, Lincoln Seiji; Loch, Ana Paula; Argollo, Marjorie Costa; Ambrogini Junior, Orlando; D'Ippolito, Giuseppe.
Radiol. bras
; 50(1): 13-18, Jan.-Feb. 2017. tab, graf
Artículo
en Inglés
| LILACS | ID: biblio-842434
Abstract
Objective:
To assess the impact that examiner experience has on the reproducibility and accuracy of computed tomography (CT) enterography in the detection of radiological signs in patients with Crohn's disease. Materials andMethods:
This was a retrospective, cross-sectional observational study involving the analysis of CT enterography scans of 20 patients with Crohn's disease. The exams were analyzed independently by two radiologists in their last year of residence (duo I) and by two abdominal imaging specialists (duo II). The interobserver agreement of each pair of examiners in identifying the main radiological signs was calculated with the kappa test. The accuracy of the examiners with less experience was quantified by using the consensus among three experienced examiners as a reference.Results:
Duo I and duo II obtained a similar interobserver agreement, with a moderate to good correlation, for mural hyperenhancement, parietal thickening, mural stratification, fat densification, and comb sign (kappa 0.45-0.64). The less experienced examiners showed an accuracy > 80% for all signs, except for lymph nodes and fistula, for which it ranged from 60% to 75%.Conclusion:
Less experienced examiners have a tendency to present a level of interobserver agreement similar to that of experienced examiners in evaluating Crohn's disease through CT enterography, as well as showing satisfactory accuracy in identifying most radiological signs of the disease.
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