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  <ref-type name="Journal Article">17</ref-type>
  <contributors>
    <authors>
      <author>Löwen, Daniel</author>
      <author>Pracht, Eberhard D</author>
      <author>Veldmann, Marten</author>
      <author>Gras, Vincent</author>
      <author>Mauconduit, Franck</author>
      <author>Boulant, Nicolas</author>
      <author>Stöcker, Tony</author>
    </authors>
    <subsidiary-authors>
      <author>AG Stöcker</author>
    </subsidiary-authors>
  </contributors>
  <titles>
    <title>Calibration-Free GRAPE pTx Pulses for Homogeneous Spatial-Selective Excitation at 7T.</title>
    <secondary-title>Magnetic resonance in medicine</secondary-title>
  </titles>
  <periodical>
    <full-title>Magnetic resonance in medicine</full-title>
  </periodical>
  <publisher>Wiley-Liss</publisher>
  <pub-location>New York, NY [u.a.]</pub-location>
  <isbn>1522-2594</isbn>
  <electronic-resource-num>10.1002/mrm.70266</electronic-resource-num>
  <language>English</language>
  <pages>3104 - 3115</pages>
  <number>6</number>
  <volume>95</volume>
  <abstract>Extend the universal pulse GRAPE formalism to pulses with a defined spectral response, and apply the concept to spatial selection.We added Bloch simulations at several frequencies for each voxel to the pulse calculation to create universal spectrally-selective GRAPE pulses. With a superimposed constant gradient field spatial selection was achieved. The method was tested in slice- and slab-selective imaging experiments.Universal spatially-selective GRAPE pulses increased FA homogeneity and SNR. In 2D gradient echoes, the SNR could be increased by approximately 6% compared to CP pulses, and in a slab-selective TSE sequence, the SNR increased by 29% against k T -spokes pulses. Additionally, the slab-selective GRAPE pulse proved to be more robust against B 0 deviations and is significantly shorter in comparison to k T -spokes pulses while maintaining a similar FA homogeneity.Spatially-selective universal GRAPE pulses exhibit superior performance compared to k T -spokes pulses. These short and robust pTx pulses hold potential for enhancing a wide range of imaging applications, thereby advancing 7T MRI technology closer to clinical use.</abstract>
  <notes/>
  <label>PUB:(DE-HGF)16, ; 0, ; </label>
  <keywords>
    <keyword>Phantoms, Imaging</keyword>
    <keyword>Humans</keyword>
    <keyword>Algorithms</keyword>
    <keyword>Magnetic Resonance Imaging: methods</keyword>
    <keyword>Signal-To-Noise Ratio</keyword>
    <keyword>Calibration</keyword>
    <keyword>Image Processing, Computer-Assisted: methods</keyword>
    <keyword>Computer Simulation</keyword>
    <keyword>Brain: diagnostic imaging</keyword>
    <keyword>GRAPE</keyword>
    <keyword>parallel transmission</keyword>
    <keyword>ultra‐high field</keyword>
    <keyword>universal pulses</keyword>
  </keywords>
  <accession-num/>
  <work-type>Journal Article</work-type>
  <dates>
    <pub-dates>
      <year>2026</year>
    </pub-dates>
  </dates>
  <accession-num>DZNE-2026-00360</accession-num>
  <year>2026</year>
  <custom2>pmc:PMC13049268</custom2>
  <custom6>pmid:41588662</custom6>
  <urls>
    <related-urls>
      <url>https://pub.dzne.de/record/285914</url>
      <url>https://doi.org/10.1002/mrm.70266</url>
    </related-urls>
  </urls>
</record>

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