Abstract #2737
2D PC-MRI with 3D Flow Encoding acquisitions Only (FEsO) for Accurate Slice Orientation-Independent Blood Flow Measurement
Da Wang 1,2 and Peng Hu 1,2
1
Department of Radiological Sciences, David
Geffen School of Medicine, University of California Los
Angeles, Los Angeles, California, United States,
2
Biomedical
Physics Interdepartmental Graduate Program, University
of California Los Angeles, Los Angeles, California,
United States
Phase-contrast MRI (PC-MRI) is a well-established
technique for quantification of blood flow and velocity.
Quite often, for through-plane Flow Encoding (FE) 2D
dynamic PC-MRI, the imaging slice may not be
perpendicular to the blood vessel of interest and result
in underestimation of peak velocity. Three-directional
FE acquisitions may mitigate the underestimation but
necessitate a lower temporal-resolution. We assume that
the blood flow velocity direction does not change
significantly between adjacent cardiac phases. We
propose a fast 2D dynamic PC-MRI technique by using a
constrain term of velocity direction to calculate flow
compensation data using three-directional FE
acquisitions Only (FEsO).
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