Magnetic resonance imaging method with optimization algorithm for background phase distribution


A magnetic resonance (MR) imaging method, wherein a spatial MR signal distribution with background phase distribution is generated, MR signals are acquired, the spatial MR signal distribution is reconstructed, and wherein the reconstruction quality depends on the spatial distribution of the background phase, uses an optimization algorithm to determine the background phase distribution to be generated. At least one spatially selective radio frequency pulse is applied, which contributes to the generation of the MR signal distribution with the previously determined background phase distribution, the spatially selective radio frequency pulse generating a background phase offset distribution which is part of the background phase distribution, and the background phase offset distribution is determined within the scope of the optimization algorithm. A limitation of the spatial variation of the background phase offset distribution is integrated as boundary condition in the optimization algorithm and the reconstruction quality is used as an optimization criterion.




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Patent Citations (1)

    Publication numberPublication dateAssigneeTitle
    US-2008238425-A1October 02, 2008Dan Xu, King Kevin F, Liang Zhi-PeiSystem and method for designing improved rf pulse profiles

NO-Patent Citations (1)

    Magnetic Resonance Materials in Physics, Biology and Medicine, vol 23, 2010, Springer, Nunes R G et al, "Combining RF encoding with parallel imaging: a simulation study", pages 31 - 38

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