Relationships between scalp, brain, and skull motion estimated using magnetic resonance elastography.

ABSTRACT: The objective of this study was to characterize the relationships between motion in the scalp, skull, and brain. In vivo estimates of motion transmission from the skull to the brain may illuminate the mechanics of traumatic brain injury. Because of challenges in directly sensing skull motion, it is useful to know how well motion of soft tissue of the head, i.e., the scalp, can approximate skull motion or predict brain tissue deformation. In this study, motion of the scalp and brain were measured using magnetic resonance elastography (MRE) and separated into components due to rigid-body displacement and dynamic deformation. Displacement estimates in the scalp were calculated using low motion-encoding gradient strength in order to reduce "phase wrapping" (an ambiguity in displacement estimat

SUBMITTER: Badachhape AA 

PROVIDER: S-EPMC5932239 | biostudies-literature | 2018 May

REPOSITORIES: biostudies-literature