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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