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Radiologia Brasileira

On-line version ISSN 1678-7099


FREIRE FILHO, Edison de Oliveira et al. Reproducibility in the assessment of acute pancreatitis with computed tomography. Radiol Bras [online]. 2007, vol.40, n.6, pp.383-387. ISSN 1678-7099.

OBJECTIVE: To evaluate the reproducibility of unenhanced and contrast-enhanced computed tomography in the assessment of patients with acute pancreatitis. MATERIALS AND METHODS: Fifty-one unenhanced and contrast-enhanced abdominal computed tomography studies of patients with acute pancreatitis were blindly reviewed by two radiologists (observers 1 and 2). The morphological index was separately calculated for unenhanced and contrast-enhanced computed tomography and the disease severity index was established. Intraobserver and interobserver reproducibility of computed tomography was measured by means of the kappa index (k). RESULTS: Interobserver agreement was k = 0.666, 0.705, 0.648, 0.547 and 0.631, respectively for unenhanced and contrast-enhanced morphological index, presence of pancreatic necrosis, pancreatic necrosis extension, and disease severity index. Intraobserver agreement (observers 1 and 2, respectively) was k = 0.796 and 0.732 for unenhanced morphological index; k = 0.725 and 0.802 for contrast-enhanced morphological index; k = 0.674 and 0.849 for presence of pancreatic necrosis; k = 0.606 and 0.770 for pancreatic necrosis extension; and k = 0.801 and 0.687 for disease severity index at computed tomography. CONCLUSION: Computed tomography for determination of morphological index and disease severity index in the staging of acute pancreatitis is a quite reproducible method. The absence of contrast-enhancement does not affect the computed tomography morphological index reproducibility.

Keywords : Pancreatitis; X-ray computed tomography; Disease severity index; Prognosis; Contrast media; Necrosis.

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