Abstract #3197
Enhancing Image Contrast in Human Brain by Voxel Spread Function Method
Xialing Ulrich 1 and Dmitriy A Yablonskiy 1
1
Mallinckrodt Institute of Radiology,
Washington University in St. Louis, St. Louis, Missouri,
United States
Gibbs ringing artifacts especially pronounced in the
presence of magnetic field inhomogeneities adversely
affect different aspects of MRI. In quantitative MRI
they bias and often corrupt measurements. The VSF (voxel
spread function) method provides a platform for
correcting images and can be applied to a variety of
quantitative gradient-echo-based MRI techniques.
Elimination of Gibbs artifacts in VSF approach requires
solution of high-rank matrix equation (VSF equation) and
relies on certain approximations. Herein we propose a
method for solution of VSF equation allowing for
substantially improving visibility of sharp edges and
demonstrate improved contrast of blood vessels in the
human brain.
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