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Abstract #1854

Flow Quantification in the Heart Chambers: 3D PC-SSFP Compared with Spoiled GE

Marijn P. Rolf1, Mark B.M. Hofman1, Joost P.A. Kuijer1, Albert C. van Rossum2, Rob M. Heethaar1

1Physics and Medical Technology, ICaR-VU, VU University Medical Center, Amsterdam, Netherlands; 2Cardiology, ICaR-VU, VU University Medical Center, Amsterdam, Netherlands

This study evaluated the flow quantification properties of a new 3D PC-SSFP sequence. In vitro, flow measurements matched with regular flow meters and with 3D PC-GE measurements. In vivo, at the descending aorta the PC-SSFP correlated well with PC-GE. Measurements at the mitral valve level showed good correlation with 3D PC-GE for peak velocities, whereas mean flow showed only moderate correlation. Nevertheless, the mean flow repeatability of PC-SSFP was better than PC-GE, as can be explained by the higher contrast-to-noise ratio within the heart chambers, supporting positioning of the ROI. Therefore, this new sequence provides improved cardiac flow imaging.