Martin Uppman1, Michael Markl2, Bruce S. Spottiswoode3,4
1Lund Institute of Technology, Lund, Sweden; 2Diagnostic Radiology, Medical Physics, Albert-Ludwigs Universitt, Freiburg, Germany; 3MRC/UCT Medical Imaging Research Unit, Department of Human Biology, University of Cape Town, South Africa; 4Department of Radiology, Stellenbosch University, South Africa
This work evaluates k-space high-pass filtering as a post-processing background phase correction technique for 2D phase contrast velocity encoded MRI. Results are compared to an established technique which involves estimating the phase variation in stationary tissue and subtracting a fitted polynomial surface. Phantom and in-vivo studies show that k-space filtering with a large kernel performs equally as well as a high order polynomial surface subtraction.