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Abstract #0505

Investigation of a ventricular assist device (VAD) in an in vitro model system using 4D-phase contrast MRI

Christoph Mller 1 , Waltraud Brigitte Buchenberg 1 , Christoph Benk 2 , Ramona Lorenz 1 , Stephan Berner 1 , and Bernd Jung 1

1 Dept. of Radiology, Medical Physics, University Medical Center, Freiburg, Germany, 2 Dept. of Cardiovascular Surgery, Heart Center Freiburg, University Freiburg, Germany

Since in vivo MR studies of ventricular assist devices (VAD) patients are not possible, in vitro models are an important tool to assess flow alterations caused by VADs. For instance they allow for characterizing the impact of different cannula positions or different operating conditions on the hemodynamics. Using an in vitro MR compatible model system this work investigated the flow characteristics of a VAD with a blood supply via the right subclavian artery (SCA) as commonly used in cardio-thoracic surgery in the recent past. 4D phase contrast (PC)-MRI was used for qualitative and quantitative evaluation of flow characteristics.

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