Application of UNFOLD to Real-Time Fourier Velocity Encoding
Macgowan C, Madore B
University of Toronto & Hospital for Sick Children
A method is presented and experimentally validated to remove aliasing artifacts from real-time Fourier velocity encoding (FVE) using UNFOLD. UNFOLD cannot be applied directly to real-time FVE data because the measured flow patterns already possess large temporal bandwidths that would interfere with UNFOLD encoding. We show that it is possible to suppress the signal modulation related to flow by pre-processing the FVE data, which then allows artifact removal using UNFOLD. This approach will enable more aggressive undersampling of k-space without compromising flow measurement.