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@ARTICLE{Hong:861300,
      author       = {Hong, Suk-Min and Choi, Chang-Hoon and Magill, Arthur W.
                      and Jon Shah, N. and Felder, Jarg},
      title        = {{D}esign of a {Q}uadrature 1{H}/31{P} {C}oil {U}sing {B}ent
                      {D}ipole {A}ntenna and {F}our-{C}hannel {L}oop at 3{T}
                      {MRI}},
      journal      = {IEEE transactions on medical imaging},
      volume       = {37},
      number       = {12},
      issn         = {0278-0062},
      address      = {New York, NY},
      publisher    = {IEEE},
      reportid     = {FZJ-2019-01795},
      pages        = {2613 - 2618},
      year         = {2018},
      abstract     = {MRI using nuclei other than protons is of clinical interest
                      due to the important role of these nuclei in cellular
                      processes. Phosphorous-31 ( 31 P), for example, plays an
                      important role in energy metabolism. However, measurement of
                      31 P can be challenging, as the receive signal is weak
                      compared with that of proton ( 1 H). Consequently, it is
                      often necessary to integrate 1 H elements for localizations
                      and B0 shimming in RF coils intended for 31 P measurements.
                      Good decoupling between the 1 H and the 31 P elements is
                      therefore essential. In this paper, bent dipole antennas
                      tuned to 1 H were integrated with a four channel 31 P loop
                      coil array, in a manner providing strong geometric
                      decoupling between dipoles and loops. As the physical length
                      of a resonant dipole antenna is too long at 3T, the dipole
                      antennas were bent around the load. The loss of 31 P
                      elements due to the presence of the dipole antennas was
                      evaluated by measuring scattering parameters and comparing
                      the SNR of 31 P spectra with and without the presence of the
                      dipole antennas. The performance of the bent dipole antenna
                      was evaluated by simulation and sensitivity measurement. The
                      Q-factors and the SNR of the four-loop array were reduced by
                      less than $5\%$ when the bent dipole antennas were
                      introduced. The measured sensitivity of the bent dipole was
                      higher $(15\%)$ than that of dual-tuned birdcage. The
                      combined bent dipole and loop array is therefore a promising
                      design for 1 H/ 31 P applications at 3T.},
      cin          = {INM-4 / INM-11 / JARA-BRAIN},
      ddc          = {620},
      cid          = {I:(DE-Juel1)INM-4-20090406 / I:(DE-Juel1)INM-11-20170113 /
                      $I:(DE-82)080010_20140620$},
      pnm          = {573 - Neuroimaging (POF3-573)},
      pid          = {G:(DE-HGF)POF3-573},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:29994198},
      UT           = {WOS:000451903400006},
      doi          = {10.1109/TMI.2018.2844462},
      url          = {https://juser.fz-juelich.de/record/861300},
}