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Multidetector CT enteroclysis: comparison of the reading performance for axial and coronal views

Schmidt, Sabine ; Chevallier, Patrick ; Chalaron, Marc ; Bessoud, Bertrand ; Verdun, Francis ; Frascarolo, Philippe ; Schnyder, Pierre ; Denys, Alban

In: European Radiology, 2005, vol. 15, no. 2, p. 238-246

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    Titre
    • Multidetector CT enteroclysis: comparison of the reading performance for axial and coronal views
    Auteur
    • Schmidt, Sabine. Service de radiodiagnostic et radiologie interventionnelle, Centre Hospitalier Universitaire Vaudois—CHUV, Rue du Bugnon, 1011, Lausanne, Switzerland
    • Chevallier, Patrick. Department of Diagnostic Radiology, CHU, Nice, France
    • Chalaron, Marc. Service de radiodiagnostic et radiologie interventionnelle, Centre Hospitalier Universitaire Vaudois—CHUV, Rue du Bugnon, 1011, Lausanne, Switzerland
    • Bessoud, Bertrand. Department of General Radiology, BROCA, Le Kremlin-Bicêtre, France
    • Verdun, Francis. University Institute of Applied Radiophysics, Lausanne, Switzerland
    • Frascarolo, Philippe. Department of Anesthesiology, Lausanne, Switzerland
    • Schnyder, Pierre. Service de radiodiagnostic et radiologie interventionnelle, Centre Hospitalier Universitaire Vaudois—CHUV, Rue du Bugnon, 1011, Lausanne, Switzerland
    • Denys, Alban. Service de radiodiagnostic et radiologie interventionnelle, Centre Hospitalier Universitaire Vaudois—CHUV, Rue du Bugnon, 1011, Lausanne, Switzerland
    Type de document
    • Postprint
    Langue
    • Anglais
    Publié dans
    • European Radiology, 2005, vol. 15, no. 2, p. 238-246. Springer-Verlag; http://www.springer.de
    Autre version électronique
    Identifiant OAI-PMH
    • oai:doc.rero.ch:312612
    Summary
    The purpose of this study was to compare the diagnostic performance of axial and coronal views in multidetector CT enteroclysis (MDCTE). We retrospectively evaluated 48 patients with pathological correlation investigated by MDCTE for small bowel disorders. After nasojejunal administration of 2l of 5% methylcellulose axial arterial and venous acquisition of MDCTE was followed by coronal reconstructions using equal slice thicknesses of 2.5mm with 2mm increments. Spatial resolution of both planes was evaluated by phantom. Three radiologists independently read axial and coronal images concerning 12 pathological features. The interobserver agreement and time of reading was calculated. Sensitivity and specificity resulted from comparison with histopathology (n=39) or follow-up (n=9). Phantom study revealed higher spatial resolution for axial than coronal views, whatever reconstruction interval was used. However, spatial frequency always remained high. Most pathological signs, such as bowel wall thickening (BWT), bowel wall enhancement (BWE) and intraperitoneal fluid (IPF), showed better interobserver agreement on axial than coronal views (BWT: 0.61 vs. 0.44; BWE: 0.56 vs. 0.5; IPF:0.53 vs. 0.43). The Wilcoxon signed-rank test revealed significantly higher sensitivity for axial than coronal views (P=0.0453); the time of reading was significantly shorter for the latter (P=0.0146). The diagnostic value of axial slices is superior to coronal reconstructions despite the reduced data volume and display of the physiological course of bowel loops on the coronal plane