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.
Original languageEnglish
Title of host publicationProceedings of the 2020 ISMRM & SMRT Virtual Conference & Exhibition
Number of pages3
PublisherThe International Society for Magnetic Resonance in Medicine
Publication date2020
Article number3667
Publication statusPublished - 2020
EventISMRM & SMRT Virtual Conference & Exhibition 2020 - Virtual conference
Duration: 8 Aug 202014 Aug 2020


ConferenceISMRM & SMRT Virtual Conference & Exhibition 2020
LocationVirtual conference
Internet address


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