Contrast Enhanced Ultrasound (CEUS) Liver Imaging Reporting and Data System (LI-RADS®): the official version by the American College of Radiology (ACR) - Kono, Yuko; Lyshchik, Andrej; Cosgrove, David; Dietrich, Christoph F.; Jang, Hyun-Jung; Kim, Tae Kyoung; Piscaglia, Fabio; Willmann, Juergen K.; Wilson, Stephanie R.; Santillan, Cynthia; Kambadakone, Avinash; Mitchell, Donald; Vezeridis, Alexander; Sirlin, Claude B. (Ultraschall in der Medizin - European Journal of Ultrasound, 2017)