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The traveling heads: multicenter brain imaging at 7 Tesla

Item Type:Article
Title:The traveling heads: multicenter brain imaging at 7 Tesla
Creators Name:Voelker, M.N. and Kraff, O. and Brenner, D. and Wollrab, A. and Weinberger, O. and Berger, M.C. and Robinson, S. and Bogner, W. and Wiggins, C. and Trampel, R. and Stoecker, T. and Niendorf, T. and Quick, H.H. and Norris, D.G. and Ladd, M.E. and Speck, O.
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.
Keywords:Magnetic Resonance Imaging, Neuroimaging, Ultrahigh Field, Multi-Center
Source:Magnetic Resonance Materials in Physics Biology and Medicine
Page Range:399-415
Date:June 2016
Official Publication:https://doi.org/10.1007/s10334-016-0541-8
PubMed:View item in PubMed

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