Construction of a fetal spatio-temporal cortical surface atlas from in utero MRI: Application of spectral surface matching.

Autor: Wright R; Biomedical Image Analysis Group, Department of Computing, Imperial College London, London SW7 2AZ, UK. Electronic address: r.wright11@imperial.ac.uk., Makropoulos A; Biomedical Image Analysis Group, Department of Computing, Imperial College London, London SW7 2AZ, UK., Kyriakopoulou V; Centre for the Developing Brain, Division of Imaging Sciences and Biomedical Engineering, King's College London, King's Health Partners, St. Thomas' Hospital, London SE1 7EH, UK., Patkee PA; Centre for the Developing Brain, Division of Imaging Sciences and Biomedical Engineering, King's College London, King's Health Partners, St. Thomas' Hospital, London SE1 7EH, UK., Koch LM; Biomedical Image Analysis Group, Department of Computing, Imperial College London, London SW7 2AZ, UK., Rutherford MA; Centre for the Developing Brain, Division of Imaging Sciences and Biomedical Engineering, King's College London, King's Health Partners, St. Thomas' Hospital, London SE1 7EH, UK., Hajnal JV; Centre for the Developing Brain, Division of Imaging Sciences and Biomedical Engineering, King's College London, King's Health Partners, St. Thomas' Hospital, London SE1 7EH, UK., Rueckert D; Biomedical Image Analysis Group, Department of Computing, Imperial College London, London SW7 2AZ, UK., Aljabar P; Biomedical Image Analysis Group, Department of Computing, Imperial College London, London SW7 2AZ, UK; Department of Biomedical Engineering, Division of Imaging Sciences and Biomedical Engineering, King's College London, King's Health Partners, St. Thomas' Hospital, London SE1 7EH, UK.
Jazyk: angličtina
Zdroj: NeuroImage [Neuroimage] 2015 Oct 15; Vol. 120, pp. 467-80. Date of Electronic Publication: 2015 Jun 10.
DOI: 10.1016/j.neuroimage.2015.05.087
Abstrakt: In this study, we construct a spatio-temporal surface atlas of the developing cerebral cortex, which is an important tool for analysing and understanding normal and abnormal cortical development. In utero Magnetic Resonance Imaging (MRI) of 80 healthy fetuses was performed, with a gestational age range of 21.7 to 38.9 weeks. Topologically correct cortical surface models were extracted from reconstructed 3D MRI volumes. Accurate correspondences were obtained by applying a joint spectral analysis to cortices for sets of subjects close to a specific age. Sulcal alignment was found to be accurate in comparison to spherical demons, a state of the art registration technique for aligning 2D cortical representations (average Fréchet distance≈0.4 mm at 30 weeks). We construct consistent, unbiased average cortical surface templates, for each week of gestation, from age-matched groups of surfaces by applying kernel regression in the spectral domain. These were found to accurately capture the average cortical shape of individuals within the cohort, suggesting a good alignment of cortical geometry. Each spectral embedding and its corresponding cortical surface template provide a dual reference space where cortical geometry is aligned and a vertex-wise morphometric analysis can be undertaken.
(Copyright © 2015. Published by Elsevier Inc.)
Databáze: MEDLINE
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