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, Städtisches 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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