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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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