Robust retrospective motion correction of head motion using navigator-based and markerless motion tracking techniques.

ABSTRACT:

Purpose

This study investigated the artifacts arising from different types of head motion in brain MR images and how well these artifacts can be compensated using retrospective correction based on two different motion-tracking techniques.

Methods

MPRAGE images were acquired using a 3 T MR scanner on a cohort of nine healthy participants. Subjects moved their head to generate circular motion (4 or 6 cycles/min), stepwise motion (small and large) and "simulated realistic" motion (nodding and slow diagonal motion), based on visual instructions. One MPRAGE scan without deliberate motion was always acquired as a "no motion" reference. Three dimensional fat-navigator (FatNavs) and a Tracoline markerless device (TracInnovations) were used to obtain motion estimates and images were

SUBMITTER: Marchetto E 

PROVIDER: S-EPMC7615144 | biostudies-literature | 2023 Oct

REPOSITORIES: biostudies-literature