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@ARTICLE{Rank:119784,
      author       = {C. Rank$^*$ and T. Heußer$^*$ and M. T. A. Buzan and A.
                      Wetscherek$^*$ and M. Freitag$^*$ and J. Dinkel and M.
                      Kachelrieß$^*$},
      title        = {4{D} respiratory motion-compensated image reconstruction of
                      free-breathing radial {MR} data with very high
                      undersampling.},
      journal      = {Magnetic resonance in medicine},
      volume       = {77},
      number       = {3},
      issn         = {0740-3194},
      address      = {New York, NY [u.a.]},
      publisher    = {Wiley-Liss},
      reportid     = {DKFZ-2017-00411},
      pages        = {1170 - 1183},
      year         = {2017},
      note         = {E025},
      abstract     = {To develop four-dimensional (4D) respiratory time-resolved
                      MRI based on free-breathing acquisition of radial MR data
                      with very high undersampling.We propose the 4D joint
                      motion-compensated high-dimensional total variation (4D
                      joint MoCo-HDTV) algorithm, which alternates between
                      motion-compensated image reconstruction and artifact-robust
                      motion estimation at multiple resolution levels. The
                      algorithm is applied to radial MR data of the thorax and
                      upper abdomen of 12 free-breathing subjects with acquisition
                      times between 37 and 41 s and undersampling factors of 16.8.
                      Resulting images are compared with compressed sensing-based
                      4D motion-adaptive spatio-temporal regularization (MASTeR)
                      and 4D high-dimensional total variation (HDTV)
                      reconstructions.For all subjects, 4D joint MoCo-HDTV
                      achieves higher similarity in terms of normalized mutual
                      information and cross-correlation than 4D MASTeR and 4D HDTV
                      when compared with reference 4D gated gridding
                      reconstructions with 8.4 ± 1.1 times longer acquisition
                      times. In a qualitative assessment of artifact level and
                      image sharpness by two radiologists, 4D joint MoCo-HDTV
                      reveals higher scores (P < 0.05) than 4D HDTV and 4D MASTeR
                      at the same undersampling factor and the reference 4D gated
                      gridding reconstructions, respectively.4D joint MoCo-HDTV
                      enables time-resolved image reconstruction of free-breathing
                      radial MR data with undersampling factors of 16.8 while
                      achieving low-streak artifact levels and high image
                      sharpness. Magn Reson Med 77:1170-1183, 2017. © 2016
                      International Society for Magnetic Resonance in Medicine.},
      cin          = {E020 / E025 / E010},
      ddc          = {610},
      cid          = {I:(DE-He78)E020-20160331 / I:(DE-He78)E025-20160331 /
                      I:(DE-He78)E010-20160331},
      pnm          = {315 - Imaging and radiooncology (POF3-315)},
      pid          = {G:(DE-HGF)POF3-315},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:26991911},
      doi          = {10.1002/mrm.26206},
      url          = {https://inrepo02.dkfz.de/record/119784},
}