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
Dept. of Radiology, Medical Physics,
University Medical Center, Freiburg, Germany,
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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