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Abstract #1363

Magnetic Resonance 2D Phase Contrast Flow Imaging of Patients with Stenotic Aortic and Pulmonary Valves

Juha Ilmari Peltonen1,2, Touko Kaasalainen3,4, Sari Kivist3, Miia Holmstrm3, Kirsi Lauerma1

1HUS Medical Imaging Center, Helsinki University Central Hospital, Helsinki, Finland; 2Department of Biomedical Engineering and Computational Science, Aalto University, Helsinki, Finland; 3HUS Medical Imaging Center, Helsinki University Central Hospital, N/A, Helsinki, Finland; 4Department of Physics, Helsinki University, Helsinki, Finland

2D through plane phase contrast imaging of patients with stenotic pulmonal or aortic valves is subject to many sources of error. Accelerated flow speed increases the amount and range of the acceleration artefact near the valve. On the other hand, the nature of the flow becomes highly turbulent soon after the valve. In this study we have examined the effect of the mentioned error sources to measured net flow. Also, the optimal position of the measurement plane and clinical routine currently in use is discussed.