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Abstract #1960

Valvular flow imaging in the era of feature-tracking: Pilot study to measure mitral flow

Felicia Seemann1,2, Einar Heiberg1,2,3, Marcus Carlsson1, Lauren Baldassarre4,5, Maolin Qiu4, and Dana C Peters4

1Department of Clinical Physiology, Lund University, Skane University Hospital, Lund, Sweden, 2Department of Biomedical Engineering, Lund University, Faculty of Engineering, Lund, Sweden, 3Wallenberg Center for Molecular Medicine, Lund University, Lund, Sweden, 4Department of Radiology & Biomedical Imaging, Yale School of Medicine, Yale University, New Haven, CT, United States, 5Department of Cardiology, Yale School of Medicine, Yale University, New Haven, CT, United States

Magnetic resonance imaging of the mitral valve is challenging since the valve moves in and out of the image plane during the cardiac cycle. To more accurately measure mitral flow, a phase contrast sequence that uses offline feature-tracking of the valve in the long-axis view is proposed. The tracking result is exported to the scanner, allowing the slice position to change in real-time based on the cardiac phase.

The slice-following sequence outperformed the conventional sequence when quantifying regurgitant volumes. Hence, the new sequence is a promising method for improving the accuracy of trans-valvular flow.

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