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Multi-contrast anatomical subcortical structures parcellation.

ABSTRACT: The human subcortex is comprised of more than 450 individual nuclei which lie deep in the brain. Due to their small size and close proximity, up until now only 7% have been depicted in standard MRI atlases. Thus, the human subcortex can largely be considered as terra incognita. Here, we present a new open-source parcellation algorithm to automatically map the subcortex. The new algorithm has been tested on 17 prominent subcortical structures based on a large quantitative MRI dataset at 7 Tesla. It has been carefully validated against expert human raters and previous methods, and can easily be extended to other subcortical structures and applied to any quantitative MRI dataset. In sum, we hope this novel parcellation algorithm will facilitate functional and structural neuroimaging research into small subcortical nuclei and help to chart terra incognita.

SUBMITTER: Bazin PL

PROVIDER: S-EPMC7771958 | biostudies-literature | 2020 Dec

REPOSITORIES: biostudies-literature

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Multi-contrast anatomical subcortical structures parcellation.

Bazin Pierre-Louis PL Alkemade Anneke A Mulder Martijn J MJ Henry Amanda G AG Forstmann Birte U BU

eLife 20201216

The human subcortex is comprised of more than 450 individual nuclei which lie deep in the brain. Due to their small size and close proximity, up until now only 7% have been depicted in standard MRI atlases. Thus, the human subcortex can largely be considered as terra incognita. Here, we present a new open-source parcellation algorithm to automatically map the subcortex. The new algorithm has been tested on 17 prominent subcortical structures based on a large quantitative MRI dataset at 7 Tesla. ...[more]

PMID: 33325368

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