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.
Keywords