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Multi-scale radiomic analysis of sub-cortical regions in MRI related to autism, gender and age

Chaddad, Ahmad et Desrosiers, Christian et Toews, Matthew. 2017. « Multi-scale radiomic analysis of sub-cortical regions in MRI related to autism, gender and age ». Scientific Reports, vol. 7.

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Résumé

We propose using multi-scale image textures to investigate links between neuroanatomical regions and clinical variables in MRI. Texture features are derived at multiple scales of resolution based on the Laplacian-of-Gaussian (LoG) filter. Three quantifier functions (Average, Standard Deviation and Entropy) are used to summarize texture statistics within standard, automatically segmented neuroanatomical regions. Significance tests are performed to identify regional texture differences between ASD vs. TDC and male vs. female groups, as well as correlations with age (corrected p < 0.05). The open-access brain imaging data exchange (ABIDE) brain MRI dataset is used to evaluate texture features derived from 31 brain regions from 1112 subjects including 573 typically developing control (TDC, 99 females, 474 males) and 539 Autism spectrum disorder (ASD, 65 female and 474 male) subjects. Statistically significant texture differences between ASD vs. TDC groups are identified asymmetrically in the right hippocampus, left choroid-plexus and corpus callosum (CC), and symmetrically in the cerebellar white matter. Sex-related texture differences in TDC subjects are found in primarily in the left amygdala, left cerebellar white matter, and brain stem. Correlations between age and texture in TDC subjects are found in the thalamus-proper, caudate and pallidum, most exhibiting bilateral symmetry.

Type de document: Article publié dans une revue, révisé par les pairs
Informations complémentaires: Identifiant de l'article: 45639
Mots-clés libres: Fonds d'auteur ÉTS, FAETS
Professeur:
Professeur
Desrosiers, Christian
Toews, Matthew
Affiliation: Génie logiciel et des technologies de l'information, Génie de la production automatisée
Date de dépôt: 03 avr. 2017 18:07
Dernière modification: 05 avr. 2017 14:30
URI: http://espace2.etsmtl.ca/id/eprint/14932

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