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@ARTICLE{Shah:866644,
      author       = {Shah, N. J. and da Silva, Nuno André and Yun, Seong Dae},
      title        = {{P}erfusion weighted imaging using combined gradient/spin
                      echo {EPIK}: {B}rain tumour applications in hybrid
                      {MR}-{PET}},
      journal      = {Human brain mapping},
      volume       = {42},
      number       = {13},
      issn         = {1065-9471},
      address      = {New York, NY},
      publisher    = {Wiley-Liss},
      reportid     = {FZJ-2019-05723},
      pages        = {4144-4154},
      year         = {2021},
      abstract     = {Advanced perfusion‐weighted imaging (PWI) methods that
                      combine gradient echo (GE) and spin echo (SE) data are
                      important tools for the study of brain tumours. In PWI,
                      single‐shot, EPI‐based methods have been widely used due
                      to their relatively high imaging speed. However, when used
                      with increasing spatial resolution, single‐shot EPI
                      methods often show limitations in whole‐brain coverage for
                      multi‐contrast applications. To overcome this limitation,
                      this work employs a new version of EPI with keyhole (EPIK)
                      to provide five echoes: two with GEs, two with mixed GESE
                      and one with SE; the sequence is termed “GESE‐EPIK.”
                      The performance of GESE‐EPIK is evaluated against its
                      nearest relative, EPI, in terms of the temporal
                      signal‐to‐noise ratio (tSNR). Here, data from brain
                      tumour patients were acquired using a hybrid 3T
                      MR‐BrainPET scanner.GESE‐EPIK resulted in reduced
                      susceptibility artefacts, shorter TEs for the five echoes
                      and increased brain coverage when compared to EPI. Moreover,
                      compared to EPI, EPIK achieved a comparable tSNR for the
                      first and second echoes and significantly higher tSNR for
                      other echoes.A new method to obtain multi‐echo GE and SE
                      data with shorter TEs and increased brain coverage is
                      demonstrated. As proposed here, the workflow can be
                      shortened and the integration of multimodal clinical
                      MR‐PET studies can be facilitated.},
      cin          = {INM-4 / INM-11 / JARA-BRAIN},
      ddc          = {610},
      cid          = {I:(DE-Juel1)INM-4-20090406 / I:(DE-Juel1)INM-11-20170113 /
                      $I:(DE-82)080010_20140620$},
      pnm          = {573 - Neuroimaging (POF3-573) / 5253 - Neuroimaging
                      (POF4-525)},
      pid          = {G:(DE-HGF)POF3-573 / G:(DE-HGF)POF4-5253},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {30761676},
      UT           = {WOS:000683897100007},
      doi          = {10.1002/hbm.24537},
      url          = {https://juser.fz-juelich.de/record/866644},
}