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The traveling heads: multicenter brain imaging at 7 Tesla

  • Maximilian N. Voelker*
  • , Oliver Kraff
  • , Daniel Brenner
  • , Astrid Wollrab
  • , Oliver Weinberger
  • , Moritz C. Berger
  • , Simon Robinson
  • , Wolfgang Bogner
  • , Christopher Wiggins
  • , Robert Trampel
  • , Tony Stöcker
  • , Thoralf Niendorf
  • , Harald H. Quick
  • , David G. Norris
  • , Mark E. Ladd
  • , Oliver Speck
  • *Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

Objective: This study evaluates the inter-site and intra-site reproducibility of 7 Tesla brain imaging and compares it to literature values for other field strengths.

Materials and methods: The same two subjects were imaged at eight different 7 T sites. MP2RAGE, TSE, TOF, SWI, EPI as well as B1 and B0 field maps were analyzed quantitatively to assess inter-site reproducibility. Intra-site reproducibility was measured with rescans at three sites.

Results: Quantitative measures of MP2RAGE scans showed high agreement. Inter-site and intra-site reproducibility errors were comparable to 1.5 and 3 T. Other sequences also showed high reproducibility between the sites, but differences were also revealed. The different RF coils used were the main source for systematic differences between the sites.

Conclusion: Our results show for the first time that multi-center brain imaging studies of the supratentorial brain can be performed at 7 T with high reproducibility and similar reliability as at 3T. This study develops the basis for future large-scale 7 T multi-site studies.

Original languageEnglish
Pages (from-to)399-415
Number of pages17
JournalMagnetic resonance materials in physics, biology and medicine
Volume29
Issue number3
DOIs
Publication statusPublished - 1 Jun 2016
Externally publishedYes

Keywords

  • Magnetic resonance imaging (MRI)
  • Multi-center
  • Neuroimaging
  • Ultrahigh field
  • n/a OA procedure

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