ConFiG: Contextual Fibre Growth to generate realistic axonal packing for diffusion MRI simulation.
Diffusion MRI
Phantom generation
Simulation
White matter
Journal
NeuroImage
ISSN: 1095-9572
Titre abrégé: Neuroimage
Pays: United States
ID NLM: 9215515
Informations de publication
Date de publication:
15 10 2020
15 10 2020
Historique:
received:
23
03
2020
revised:
17
06
2020
accepted:
25
06
2020
pubmed:
6
7
2020
medline:
23
2
2021
entrez:
6
7
2020
Statut:
ppublish
Résumé
This paper presents Contextual Fibre Growth (ConFiG), an approach to generate white matter numerical phantoms by mimicking natural fibre genesis. ConFiG grows fibres one-by-one, following simple rules motivated by real axonal guidance mechanisms. These simple rules enable ConFiG to generate phantoms with tuneable microstructural features by growing fibres while attempting to meet morphological targets such as user-specified density and orientation distribution. We compare ConFiG to the state-of-the-art approach based on packing fibres together by generating phantoms in a range of fibre configurations including crossing fibre bundles and orientation dispersion. Results demonstrate that ConFiG produces phantoms with up to 20% higher densities than the state-of-the-art, particularly in complex configurations with crossing fibres. We additionally show that the microstructural morphology of ConFiG phantoms is comparable to real tissue, producing diameter and orientation distributions close to electron microscopy estimates from real tissue as well as capturing complex fibre cross sections. Signals simulated from ConFiG phantoms match real diffusion MRI data well, showing that ConFiG phantoms can be used to generate realistic diffusion MRI data. This demonstrates the feasibility of ConFiG to generate realistic synthetic diffusion MRI data for developing and validating microstructure modelling approaches.
Identifiants
pubmed: 32622984
pii: S1053-8119(20)30593-0
doi: 10.1016/j.neuroimage.2020.117107
pmc: PMC7903162
pii:
doi:
Types de publication
Journal Article
Research Support, N.I.H., Extramural
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
117107Subventions
Organisme : NIMH NIH HHS
ID : U54 MH091657
Pays : United States
Organisme : Medical Research Council
ID : MR/T020296/1
Pays : United Kingdom
Organisme : Department of Health
Pays : United Kingdom
Informations de copyright
Copyright © 2020 The Author(s). Published by Elsevier Inc. All rights reserved.
Déclaration de conflit d'intérêts
Declaration of competing interest The authors confirm that there are no conflicts commercial or financial conflicts of interest affecting this work.
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