Multi-channel 4D parametrized Atlas of Macro- and Microstructural Neonatal Brain Development

Author:

Uus Alena,Grigorescu Irina,Pietsch Maximillian,Batalle Dafnis,Christiaens Daan,Hughes Emer,Hutter Jana,Grande Lucilio Cordero,Price Anthony N.,Turnier Jacques-Donald,Rutherford Mary A.,Counsell Serena J.,Hajnal Joseph V.,Edwards A. David,Deprez Maria

Abstract

ABSTRACTStructural and diffusion MRI provide complimentary anatomical and microstructural characterization of early brain maturation. The existing models of the developing brain in time include only either structural or diffusion channels. Furthermore, there is a lack of tools for combined analysis of structural and diffusion MRI in the same reference space.In this work we propose methodology to generate multi-channel (MC) continuous spatio-temporal parametrized atlas of brain development based on MC registration driven by both T2-weighted and orientation distribution functions (ODF) channels along with the Gompertz model (GM) fitting of the signals and spatial transformations in time. We construct a 4D MC atlas of neonatal brain development during 38 to 44 week PMA range from 170 normal term subjects from developing Human Connectomme Project. The resulting atlas consists of fourteen spatio-temporal microstructural indices and two parcellation maps delineating white matter tracts and neonatal transient structures. We demonstrate applicability of the atlas for quantitative region-specific comparison of 140 term and 40 preterm subjects scanned at the term-equivalent age. We show multi-parametric microstructural differences in multiple white matter regions, including the transient compartments. The atlas and software will be available after publication of the article.

Publisher

Cold Spring Harbor Laboratory

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