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Abstract #2004

Assessment of interrater agreement and reliability for characterization of respiratory motion related artifacts at gadoxetate disodium-enhanced liver MRI

Kristina Imeen Ringe1, Julian Luetkens2, Rolf Fimmers3, Renate Hammerstingl4, Guenter Layer5, Martin Maurer6, Claas Naehle7, Sabine Michalik8, Peter Reimer9, Christina Schraml10, Andreas Schreyer11, Patrick Stumpp12, Thomas Vogl4, Frank Wacker1, Winfried Willinek13, and Guido Kukuk2

1Department of Diagnostic and Interventional Radiology, Hannover Medical School, Hannover, Germany, 2Department of Diagnostic and Interventional Radiology, University Hospital of Bonn, Bonn, Germany, 3Department of Medical Biometry, Informatics and Epidemiology, University Hospital of Bonn, Bonn, Germany, 4Department of Diagnostic and Interventional Radiology, Clinic of the Goethe University, Frankfurt, 5Department of Diagnostic and Interventional Radiology, Klinikum der Stadt Ludwigshafen, Ludwigshafen, Germany, 6Department of Radiology, University Hospital of Bern, Bern, Switzerland, 7Division of Radiology and Nuclear Medicine, Kantonspital St. Gallen, St. Gallen, Switzerland, 8Department of Radiology, Asklepios Klinik Altona, Hamburg, Germany, 9Instiute of Diagostic and Interventional Radiology, St├Ądtisches Klinukum Karlsruhe, Karlsruhe, Germany, 10Department of Diagnostic and Interventional Radiology, University Hospital of Tuebingen, Tuebingen, Germany, 11Department of Radiology, University Hospital Regensburg, Regensburg, Germany, 12Department of Diagnostic and Interventional Radiology, University Hospital Leipzig, Leipzig, Germany, 13Department of Radiology, Neuroradiology, Ultrasounnd and Nuclear Medicine, Krankenhaus der Barmherzigen Brueder, Trier, Germany

In this prospective multicenter study, interrater agreement and reliability for characterization and grading of respiratory motion artifacts related to the injection of gadoxetate disodium were evaluated. Interrater agreement and reliability for scoring of motion artifacts in the arterial phase was excellent among experienced abdominal radiologists from different European tertiary referral centers with an intraclass correlation coefficient of 0.983 and 0.985, respectively. Characterization and grading of respiratory motion artifacts can thus be performed with a high level of confidence, which is a prerequisite for assessing the incidence of this phenomenon in larger multicenter studies.

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