Contrast-Enhanced Ultrasonography (CEUS) Reveals Active Bleeding into the Urinary Bladder in a Patient with Bladder Tamponade - Nörenberg, Dominik; Mueller-Peltzer, Katharina; Tritschler, Stefan; Reiser, Maximilian; Clevert, Dirk-André (Ultraschall in der Medizin - European Journal of Ultrasound, 2018)