Abstract #3180
Accuracies of the Laplacian based phase processing methods
Saifeng Liu 1 , Sagar Buch 1 , and E. Mark Haacke 1,2
1
School of Biomedical Engineering, McMaster
University, Hamilton, Ontario, Canada,
2
Department
of Radiology, Wayne State University, Detroit, Michigan,
United States
The Laplacian of phase has been frequently used in
background phase removal in QSM. To calculate the
Laplacian of phase, the wrapped phase differences
together with discrete Laplacian operator can be used,
or the trigonometric functions together with Fourier
transform (continuous Laplacian operator) can be used.
Former studies have shown errors associated with veins
in the phase images processed using continuous Laplacian
operators. In this study, both discrete and continuous
Laplacian operators are evaluated using simulated and in
vivo data, in order to understand the source of the
error associated with veins in the processed phase
images.
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