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@ARTICLE{AgullesPedrs:544,
      author       = {Agulles-Pedrós, L. and Acosta, R.H. and Blümler, P. and
                      Spiess, H.W.},
      title        = {{R}esolution enhancement in {MRI} of laser polarized 3{H}e
                      by control of diffusion},
      journal      = {Journal of magnetic resonance},
      volume       = {197},
      issn         = {1090-7807},
      address      = {Amsterdam [u.a.]},
      publisher    = {Elsevier},
      reportid     = {PreJuSER-544},
      pages        = {56 - 62},
      year         = {2009},
      note         = {The authors want to thank Manfred Hehn and Hanspeter Raich
                      for their help in the design and construction of the gas
                      handling system at the MPI-P and jorg Schmiecleskarnp for
                      the <SUP>3</SUP>He hyperpolarization. Financial support by
                      DFG (Forschergruppe "Bildgestatzte zeitliche und regionale
                      Analyse der Ventilations - Peifusionsverhdltnisse in der
                      Lunge", grant # FOR 474) and a special grant of the Max
                      Planck society made this work possible. Finally, we want to
                      acknowledge the Partner Group for NMR Spectroscopy with High
                      Spin Polarization FaMAF-MPIP.},
      abstract     = {Diffusion of atoms or molecules in presence of magnetic
                      field gradients not only attenuates the NMR signal but also
                      leads to distortions close to restricting boundaries. This
                      phenomenon is most evident in imaging with laser polarized
                      (LP) noble gases. Diffusion of gases can be manipulated,
                      however, by admixing inert gases of different molecular
                      weight. In this work we analyze the effect of mixing
                      LP-(3)He with SF(6) on the image quality of a phantom
                      consisting of an arrangement of capillaries with different
                      diameters. Admixing buffer gases of higher molecular weight
                      changes the contrast and offers a means to record images
                      with high spatial and time resolution. Additionally we
                      demonstrate how distortions due to edge enhancement can be
                      reduced even for long timed MRI-sequences.},
      keywords     = {Diffusion / Diffusion Magnetic Resonance Imaging: methods /
                      Gases: chemistry / Gases: radiation effects / Helium:
                      analysis / Helium: chemistry / Image Enhancement: methods /
                      Isotopes: analysis / Isotopes: chemistry / Lasers / Magnetic
                      Resonance Spectroscopy: methods / Gases (NLM Chemicals) /
                      Isotopes (NLM Chemicals) / Helium (NLM Chemicals) / J
                      (WoSType)},
      cin          = {ICG-3},
      ddc          = {550},
      cid          = {I:(DE-Juel1)ICG-3-20090406},
      pnm          = {Terrestrische Umwelt},
      pid          = {G:(DE-Juel1)FUEK407},
      shelfmark    = {Biochemical Research Methods / Physics, Atomic, Molecular
                      $\&$ Chemical / Spectroscopy},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:19128992},
      UT           = {WOS:000263987500009},
      doi          = {10.1016/j.jmr.2008.12.003},
      url          = {https://juser.fz-juelich.de/record/544},
}