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 language | English |
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Pages (from-to) | 399-415 |
Number of pages | 17 |
Journal | Magnetic Resonance Materials in Physics Biology and Medicine |
Volume | 29 |
Issue number | 3 |
DOIs | |
Publication status | Published - Jun 2016 |
Keywords
- Magnetic resonance imaging
- Neuroimaging
- Ultrahigh field
- Multi-center
- T MRI DATA
- PHYSIOLOGICAL NOISE
- IMAGES
- FIELD
- REPRODUCIBILITY
- SEGMENTATION
- OPTIMIZATION
- MORPHOMETRY
- DEMENTIA
- ROBUST