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Abstract #0006

4D-Flow-MRI analysis of aortic flow patterns after replacement of the ascending aorta with a physiologically pre-shaped, 90° bent prosthesis

Thekla Helene Oechtering1, Jennifer Schlueter1, Malte Maria Sieren1, Michael Scharfschwerdt2, Christian Auer2, Markus Huellebrand3, Hans-Hinrich Sievers2, Joerg Barkhausen1, and Alex Frydrychowicz1

1Department of Radiology and Nuclear Medicine, University Hospital Schleswig-Holstein, Luebeck, Germany, 2Department of Cardiac and Cardiothoracic Vascular Surgery, University Hospital Schleswig-Holstein, Luebeck, Germany, 3Fraunhofer MEVIS, Bremen, Germany

Altered aortic anatomy after prosthesis implantation has been shown to increase secondary flow patterns with potential long-term effects. Therefore, patients after valve-sparing aortic root and ascending aorta replacement with a physiologically pre-shaped prosthesis were examined with 4D-Flow-MRI and compared to patients with straight grafts and age-matched volunteers. A reduced angulation at the distal anastomosis as well as a slightly reduced intensity of secondary flow patterns was confirmed. However, there was no reduction of secondary flow patterns in comparison to straight prostheses potentially attributed to a residual angulation at the proximal anastomosis and a dilatation at the distal anastomosis.

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