Self-gating of free breathing pulmonary MR images remains challenging due to inconsistent tidal breathing and bulk motion especially in neonatal patients. We evaluate several conventional and advanced retrospective motion compensation techniques in neonatal subjects with lung disease of prematurity. Registration-based techniques show a significant improvement in signal to noise ratio and contrast to noise ratio relative to other motion compensation methods. There were no significant changes in sharpness across the cohort. We conclude that registration-based techniques could be used to improve image quality without loss of sharpness.
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