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@ARTICLE{Choi:874943,
      author       = {Choi, Chang-Hoon and Felder, Tim and Felder, Jörg and
                      Tellmann, Lutz and Hong, Suk-Min and Wegener, Hans-Peter and
                      Shah, Nadim Jon and Ziemons, Karl},
      title        = {{D}esign, evaluation and comparison of endorectal coils for
                      hybrid {MR}-{PET} imaging of the prostate},
      journal      = {Physics in medicine and biology},
      volume       = {65},
      number       = {11},
      issn         = {0031-9155},
      address      = {Bristol},
      publisher    = {IOP Publ.},
      reportid     = {FZJ-2020-01715},
      pages        = {115005},
      year         = {2020},
      abstract     = {Prostate cancer is one of the most common cancers among men
                      and its early detection is critical for its successful
                      treatment. The use of multimodal imaging, such as MR-PET, is
                      most advantageous as it is able to provide detailed
                      information about the prostate. However, as the human
                      prostate is flexible and can move into different positions
                      under external conditions, it is important to localise the
                      focused region-of-interest using both MRI and PET under
                      identical circumstances. In this work, we designed five
                      commonly used linear and quadrature radiofrequency surface
                      coils suitable for hybrid MR-PET use in endorectal
                      applications. Due to the endorectal design and the shielded
                      PET insert, the outer face of the coils investigated was
                      curved and the region to be imaged was outside the volume of
                      the coil. The tilting angles of the coils were varied with
                      respect to the main magnetic field direction. This was done
                      to approximate the various positions from which the prostate
                      could be imaged. The transmit efficiencies and safety
                      excitation efficiencies from simulations, together with the
                      signal-to-noise ratios from the MR images were calculated
                      and analysed. Overall, it was found that the overlapped
                      loops driven in quadrature were superior to the other types
                      of coils we tested. In order to determine the effect of the
                      different coil designs on PET, transmission scans were
                      carried out, and it was observed that the differences
                      between attenuation maps with and without the coils were
                      negligible. The findings of this work can provide useful
                      guidance for the integration of such coil designs into
                      MR-PET hybrid systems in the future.},
      cin          = {INM-4 / INM-11 / JARA-BRAIN},
      ddc          = {530},
      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:32268314},
      UT           = {WOS:000541521600001},
      doi          = {10.1088/1361-6560/ab87f8},
      url          = {https://juser.fz-juelich.de/record/874943},
}