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@ARTICLE{Eisen:288151,
      author       = {C. K. Eisen and P. Liebig and J. Herrler and D. Ritter and
                      S. Lévy and M. Uder and A. Nagel$^*$ and D. Grodzki},
      title        = {{F}ast online spectral-spatial pulse design for
                      subject-specific fat saturation in cervical spine and foot
                      imaging at 1.5 {T}.},
      journal      = {Magnetic resonance materials in physics, biology and
                      medicine},
      volume       = {37},
      number       = {2},
      issn         = {0968-5243},
      address      = {Heidelberg},
      publisher    = {Springer},
      reportid     = {DKFZ-2024-00365},
      pages        = {257-272},
      year         = {2024},
      note         = {2024 Apr;37(2):257-272},
      abstract     = {To compensate subject-specific field inhomogeneities and
                      enhance fat pre-saturation with a fast online individual
                      spectral-spatial (SPSP) single-channel pulse design.The RF
                      shape is calculated online using subject-specific field maps
                      and a predefined excitation k-space trajectory. Calculation
                      acceleration options are explored to increase clinical
                      viability. Four optimization configurations are compared to
                      a standard Gaussian spectral selective pre-saturation pulse
                      and to a Dixon acquisition using phantom and volunteer (N =
                      5) data at 1.5 T with a turbo spin echo (TSE) sequence.
                      Measurements and simulations are conducted across various
                      body parts and image orientations.Phantom measurements
                      demonstrate up to a 3.5-fold reduction in residual fat
                      signal compared to Gaussian fat saturation. In vivo
                      evaluations show improvements up to sixfold for dorsal
                      subcutaneous fat in sagittal cervical spine acquisitions.
                      The versatility of the tailored trajectory is confirmed
                      through sagittal foot/ankle, coronal, and transversal
                      cervical spine experiments. Additional measurements indicate
                      that excitation field (B1) information can be disregarded at
                      1.5 T. Acceleration methods reduce computation time to a few
                      seconds.An individual pulse design that primarily
                      compensates for main field (B0) inhomogeneities in fat
                      pre-saturation is successfully implemented within an online
                      'push-button' workflow. Both fat saturation homogeneity and
                      the level of suppression are improved.},
      keywords     = {1.5 T MRI (Other) / Dynamic RF pulses (Other) / Dynamic
                      transmission (Other) / Fat saturation (Other) / Pulse design
                      (Other)},
      cin          = {E020},
      ddc          = {530},
      cid          = {I:(DE-He78)E020-20160331},
      pnm          = {315 - Bildgebung und Radioonkologie (POF4-315)},
      pid          = {G:(DE-HGF)POF4-315},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:38366129},
      doi          = {10.1007/s10334-024-01149-8},
      url          = {https://inrepo02.dkfz.de/record/288151},
}