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Abstract #0796

Effect of Temporal Resolution on Flow-Area Aortic Pulse Wave Velocity Measures Using Phase Contrast and Balanced SSFP MRI: A Preliminary Study

Tarun Naren1, Grant Steven Roberts1, and Oliver Wieben1
1Medical Physics, University of Wisconsin - Madison, Madison, WI, United States


The flow-area (QA) method is a promising phase contrast (PC) technique to assess local aortic pulse wave velocity (PWV). However, validation for reduced temporal resolutions is lacking. Data analysis and automated post-processing are compromised because of varying PC image quality throughout the cardiac cycle. In this study, we acquire PC and bSSFP data at three temporal resolutions and measure QAPWV using PC data alone and by combining PC flow measures with bSSFP areas. We found that the highest temporal resolution datasets (10ms) provide the most accurate PWV measures and the method combining bSSFP and PC was less accurate.

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