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MICRA: Microstructural Image Compilation with Repeated Acquisitions

Koller, Kristin ORCID:, Umesh Rudrapatna, Suryanarayana ORCID:, Chamberland, Maxime ORCID:, Raven, Erika P., Parker, Greg D., Tax, Chantal M. W. ORCID:, Drakesmith, Mark ORCID:, Evans, John C. ORCID:, Fasano, Fabrizio, Owen, David ORCID:, Charron, Cyril and Jones, Derek K. ORCID: 2021. MICRA: Microstructural Image Compilation with Repeated Acquisitions. NeuroImage 225 , 117406. 10.1016/j.neuroimage.2020.117406

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We provide a rich multi-contrast microstructural MRI dataset acquired on an ultra-strong gradient 3T Connectom MRI scanner comprising 5 repeated sets of MRI microstructural contrasts in 6 healthy human participants. The availability of data sets that support comprehensive simultaneous assessment of test-retest reliability of multiple microstructural contrasts (i.e., those derived from advanced diffusion, multi-component relaxometry and quantitative magnetisation transfer MRI) in the same population is extremely limited. This unique dataset is offered to the imaging community as a test-bed resource for conducting specialised analyses that may assist and inform their current and future research. The Microstructural Image Compilation with Repeated Acquisitions (MICRA) dataset includes raw data and computed microstructure maps derived from multi-shell and multi-direction encoded diffusion, multi-component relaxometry and quantitative magnetisation transfer acquisition protocols. Our data demonstrate high reproducibility of several microstructural MRI measures across scan sessions as shown by intra-class correlation coefficients and coefficients of variation. To illustrate a potential use of the MICRA dataset, we computed sample sizes required to provide sufficient statistical power a priori across different white matter pathways and microstructure measures for different statistical comparisons. We also demonstrate whole brain white matter voxel-wise repeatability in several microstructural maps. The MICRA dataset will be of benefit to researchers wishing to conduct similar reliability tests, power estimations or to evaluate the robustness of their own analysis pipelines.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Psychology
Cardiff University Brain Research Imaging Centre (CUBRIC)
Publisher: Elsevier
ISSN: 1053-8119
Funders: Wellcome Trust, EPSRC
Date of First Compliant Deposit: 14 October 2020
Date of Acceptance: 21 September 2020
Last Modified: 11 Oct 2023 20:57

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