Abstract #1729
Dipole filtering, decomposition and quantification with 3D radial acquisition
Curtis A. Corum 1 , Lauri J. Lehto 2 , Djaudat S. Idiyatullin 1 , Olli Grhn 2 , and Michael Garwood 1
1
Center for Magnetic Resonance Research,
Radiology, University of Minnesota, Minneapolis,
Minnesota, United States,
2
Department
of Neurobiology, Biomedical Imaging Unit, A. I. Virtanen
Institute for Molecular Sciences, University of Eastern
Finland, Kuopio, Northern Savonia, Finland
Susceptibility weighted imaging and quantitative
susceptibility mapping are sensitive to magnetic field
changes due to tissues and exogenous agents. For many
tissues, pathologies, and contrast agents of interest
(such as magnetic nanoparticles), quantification is
desirable and full mapping of the susceptibility or
other electrical properties is not yet practical. An
intermediate approach may be useful. We combine a dipole
matched filter to count dipole sources in the field of
view with model based dipole source decomposition of the
phase offsets in 3D radial sampled data.
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