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Abstract #0238

A New Perspective on the 4-point Balanced Velocity-encoding

Yu Ding 1 , Rizwan Ahmad 1 , Ning Jin 2 , and Orlando Simonetti 1

1 The Ohio State University, Columbus, OH, United States, 2 Siemens Healthcare, Chicago, IL, United States

This study provides a new perspective on the 4-point balanced velocity-encoding technique from the Fourier transform/frequency domain point of view. We show that, from a Fourier encoding point of view, each of the velocity directions is encoded into a sub-band centered on a different frequency by amplitude modulation. Velocity reconstruction is shown to be equivalent to a traditional filter design problem in the Fourier domain. A straight-forward velocity reconstruction algorithm based on a simple Fourier domain filter is described and tested in a volunteer. Comparing to the traditional sliding window reconstruction, the proposed method eliminates artifactual oscillations in the velocity curves.

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