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@ARTICLE{Koh:844222,
      author       = {Koh, D. and Felder, J. and Shah, N. J.},
      title        = {{A} novel analytical description of periodic volume coil
                      geometries in {MRI}},
      journal      = {Journal of magnetic resonance},
      volume       = {288},
      issn         = {1090-7807},
      address      = {Amsterdam [u.a.]},
      publisher    = {Elsevier},
      reportid     = {FZJ-2018-01663},
      pages        = {37 - 42},
      year         = {2018},
      abstract     = {MRI volume coils can be represented by equivalent lumped
                      element circuits and for a variety of these circuit
                      configurations analytical design equations have been
                      presented. The unification of several volume coil topologies
                      results in a two-dimensional gridded equivalent lumped
                      element circuit which compromises the birdcage resonator,
                      its multiple endring derivative but also novel structures
                      like the capacitive coupled ring resonator.The theory
                      section analyzes a general two-dimensional circuit by noting
                      that its current distribution can be decomposed into a
                      longitudinal and an azimuthal dependency. This can be
                      exploited to compare the current distribution with a
                      transfer function of filter circuits along one direction.
                      The resonances of the transfer function coincide with the
                      resonance of the volume resonator and the simple analytical
                      solution can be used as a design equation. The proposed
                      framework is verified experimentally against a novel
                      capacitive coupled ring structure which was derived from the
                      general circuit formulation and is proven to exhibit a
                      dominant homogeneous mode.In conclusion, a unified
                      analytical framework is presented that allows determining
                      the resonance frequency of any volume resonator that can be
                      represented by a two dimensional meshed equivalent circuit.},
      cin          = {INM-4 / JARA-BRAIN},
      ddc          = {550},
      cid          = {I:(DE-Juel1)INM-4-20090406 / $I:(DE-82)080010_20140620$},
      pnm          = {573 - Neuroimaging (POF3-573)},
      pid          = {G:(DE-HGF)POF3-573},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:29414062},
      UT           = {WOS:000427807000005},
      doi          = {10.1016/j.jmr.2018.01.003},
      url          = {https://juser.fz-juelich.de/record/844222},
}