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Abstract #2945

A Validation of MR Flow Velocity Mapping with Automated Phase Offset Correction Using a Gel Flow Phantom Controlled by a Motorized Piston in MR Phase Contrast Cine Flow Measurement

Kwan-Jin Jung1, Youssef Jaber2, and Frank C Sup IV2

1Human Magnetic Resonance Center, Institute of Applied Life Sciences, University of Massachusetts Amherst, Amherst, MA, United States, 2Department of Mechanical and Industrial Engineering, University of Massachusetts Amherst, Amherst, MA, United States

The accuracy of MR flow velocity measurement has been compromised due to a phase offset induced from the eddy current of gradient pulses. An automated correction method of the phase offset had been developed using an image-based algorithm. In order to validate the correction method and the measured velocity accuracy, we developed a flow phantom with a constant flow cross-section and used a servo motor controlled actuator to move the flow phantom accurately. The controlled movement of the new flow phantom allowed us to validate the phase offset correction method and the accuracy of the MR velocity measurement.

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