Supplemental Material for Interobserver Variability and Accuracy of Preoperative CT and MRI in Pancreatic Ductal Adenocarcinoma Size Estimation: A Retrospective Cohort Study by Romain Cocquempot, MD, Angèle Bonnin, MD, Maxime Barat, MD, MSc, Gaanan Naveendran, MD, Anthony Dohan, MD, PhD, David Fuks, MD, PhD, Benoit Terris, MD, PhD, Romain Coriat, MD, PhD, Christine Hoeffel, MD, PhD, Ugo Marchese, MD, MSc, Philippe Soyer, MD, PhD in Canadian Association of Radiologists Journal

Purpose: To assess interobserver variability and accuracy of preoperative computed tomography (CT) and magnetic resonance imaging (MRI) in pancreatic ductal adenocarcinoma (PDAC) size estimation using surgical specimens as standard of reference. Methods: Patients with PDAC who underwent preoperative CT and MRI examinations before surgery were included. PDAC largest axial dimension was measured by 2 readers on 8 MRI sequence and 2 CT imaging phases (pancreatic parenchymal and portal venous). Measurements were compared to actual tumour...