Test-retest of automated segmentation with different motion correction strategies: A comparison of prospective versus retrospective methods.

ABSTRACT: Test-retest of automated image segmentation algorithms (FSL FAST, FSL FIRST, and FREESURFER) are computed on magnetic resonance images from 12 unsedated children aged 9.4±2.6 years ([min,max] ​= ​[6.5 years, 13.8 years]) using different approaches to motion correction (prospective versus retrospective). The prospective technique, PROMO MPRAGE, dynamically estimates motion using specially acquired navigator images and adjusts the remaining acquisition accordingly, whereas the retrospective technique, MPnRAGE, uses a self-navigation property to retrospectively estimate and account for motion during image reconstruction. To increase the likelihood and range of motions, participants heads were not stabilized with padding during repeated scans. When motion was negligible both techniques had sim

SUBMITTER: Kecskemeti SR 

PROVIDER: S-EPMC7056555 | biostudies-literature | 2020 Apr

REPOSITORIES: biostudies-literature