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Optimizing a preprocessing pipeline for structural 7T MR analyses in FreeSurfer

Publikation: Bidrag til bog/antologi/rapportKonferenceabstrakt i proceedingsForskningpeer review

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Automated cortical segmentations benefit from higher SNR and spatial resolutions on 7T MR images, but are also challenged by B1 inhomogeneities, causing faulty surface inflations primarily in the temporal lobes. We investigated how FreeSurfer outputs were affected by applying eight different preprocessing schemes prior to reconstructions of submillimeter 7T MPRAGE images. The highest segmentation robustness across subjects was obtained by setting bias-field correction FWHM to 60mm and adding light regularization, and additionally performing intensity normalization.
OriginalsprogEngelsk
TitelProceedings of the 2020 ISMRM & SMRT Virtual Conference & Exhibition
Antal sider3
ForlagThe International Society for Magnetic Resonance in Medicine
Publikationsdato2020
Sider1-3
Artikelnummer3667
StatusUdgivet - 2020

ID: 62005917