Slab Segmented Edge-preserving QSM Method
Fei Cong 1 , Bo Wang 1 , Xiaohong Joe Zhou 2 , Yan Zhuo 1 , and Yongquan Ye 3
Institute of Biophysics, Chinese Academy of
Sciences, Chaoyang District, Beijing, China,
of Radiology and Center for MR Research, University of
Illinois Medical Center, Chicago, IL, United States,
of Radiology, School of Medicine, Wayne State
University, Detroit, MI, United States
A new edge-preserving method for quantitative
susceptibility mapping (QSM) is proposed, which uses 3D
slab segmented Wiener filtered phase data as input and
the convex half-quadratic regularizing algorithm to
suppress the artifacts when solving the inverse problem
by using ill-conditioned Greens function kernel.
Compared to current QSM methods, this edge-preserved
method reserves the high spatial frequency details for
veins in the final susceptibility maps. The comparisons
between quadratic regularized and edge-preserved methods
of the whole brain are presented, and the feasibility
and future work are discussed.
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