Abstract
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.
Originalsprog | Engelsk |
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Titel | Proceedings of the 2020 ISMRM & SMRT Virtual Conference & Exhibition |
Antal sider | 3 |
Forlag | The International Society for Magnetic Resonance in Medicine |
Publikationsdato | 2020 |
Sider | 1-3 |
Artikelnummer | 3667 |
Status | Udgivet - 2020 |
Begivenhed | ISMRM & SMRT Virtual Conference & Exhibition 2020 - Virtual conference Varighed: 8 aug. 2020 → 14 aug. 2020 https://www.ismrm.org/20m/ |
Konference
Konference | ISMRM & SMRT Virtual Conference & Exhibition 2020 |
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Lokation | Virtual conference |
Periode | 08/08/2020 → 14/08/2020 |
Internetadresse |