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Abstract #1726

A Fully Flow Compensated Dual Echo Sequence:The Role of Acceleration and Background Gradient Effects on Flow Compensation

Dongmei Wu 1 , Sagar Buch 2 , Saifeng Liu 2 , and E. Mark Haacke 1,3

1 Shanghai Key Laboratory of Magnetic Resonance, East China Normal University, Shanghai, China, 2 School for Biomedical Engineering, McMaster University, Hamilton, Ontario, Canada, 3 Department of Radiology, Wayne State University School of Medicine, Detroit, MI, United States

In this abstract, we present a fully flow compensated double echo sequence with alternating readout gradients for the reconstruction of both MR angiography and MR venography simultaneously. We then use the phase from both the positive and negative polarities to extract the non-compensated flow phase arising from background field inhomogeneities and acceleration effects. This phase is then removed from the original phase to provide a more pristine phase image from which we can create better SWI and QSM images. This new approach makes it possible to do SWI and QSM in practical clinical settings.

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