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@ARTICLE{Stoja:170194,
      author       = {E. Stoja and S. Konstandin and D. Philipp and R. N. Wilke
                      and D. Betancourt and T. Bertuch and J. Jenne$^*$ and R.
                      Umathum$^*$ and M. Günther},
      title        = {{I}mproving magnetic resonance imaging with smart and thin
                      metasurfaces.},
      journal      = {Scientific reports},
      volume       = {11},
      number       = {1},
      issn         = {2045-2322},
      address      = {[London]},
      publisher    = {Macmillan Publishers Limited, part of Springer Nature},
      reportid     = {DKFZ-2021-01817},
      pages        = {16179},
      year         = {2021},
      abstract     = {Over almost five decades of development and improvement,
                      Magnetic Resonance Imaging (MRI) has become a rich and
                      powerful, non-invasive technique in medical imaging, yet not
                      reaching its physical limits. Technical and physiological
                      restrictions constrain physically feasible developments. A
                      common solution to improve imaging speed and resolution is
                      to use higher field strengths, which also has subtle and
                      potentially harmful implications. However, patient safety is
                      to be considered utterly important at all stages of research
                      and clinical routine. Here we show that dynamic
                      metamaterials are a promising solution to expand the
                      potential of MRI and to overcome some limitations. A thin,
                      smart, non-linear metamaterial is presented that enhances
                      the imaging performance and increases the signal-to-noise
                      ratio in 3T MRI significantly (up to eightfold), whilst the
                      transmit field is not affected due to self-detuning and,
                      thus, patient safety is also assured. This self-detuning
                      works without introducing any additional overhead related to
                      MRI-compatible electronic control components or active
                      (de-)tuning mechanisms. The design paradigm, simulation
                      results, on-bench characterization, and MRI experiments
                      using homogeneous and structural phantoms are described. The
                      suggested single-layer metasurface paves the way for
                      conformal and patient-specific manufacturing, which was not
                      possible before due to typically bulky and rigid
                      metamaterial structures.},
      cin          = {E020},
      ddc          = {600},
      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:34376748},
      doi          = {10.1038/s41598-021-95420-w},
      url          = {https://inrepo02.dkfz.de/record/170194},
}