title: Magnetic resonance elastography of the human brain: a preliminary study.
abstract: OBJECTIVE
  To study the application of magnetic resonance elastography (MRE) in the human brain.
  
  
  METHODS
  An external force actuator was developed, which produced propagating shear waves in brain tissue. A modified phase-contrast gradient-echo sequence was developed. The propagating shear waves within the brain were directly imaged. The wave images were processed to obtain the elasticity image. Shear waves at 100 Hz, 150 Hz, and 200 Hz were applied.
  
  
  RESULTS
  The propagating shear waves in the brain were visualized on wave images. The elasticity image revealed the difference in tissue elasticity between gray and white matter of the brain.
  
  
  CONCLUSIONS
  MRE could be an imaging technique for assessing the elasticity of brain tissue.
authors.affiliation: Imaging Center of Neuroscience, Beijing Tiantan Hospital, Capital University of Medical Science, Beijing, China.
authors.forename: L
authors.initials: L
authors.lastname: Xu
authors.forename: Y
authors.initials: Y
authors.lastname: Lin
authors.forename: Z N
authors.initials: ZN
authors.lastname: Xi
authors.forename: H
authors.initials: H
authors.lastname: Shen
authors.forename: P Y
authors.initials: PY
authors.lastname: Gao
mesh_terms: D000328:Adult; D001921:Brain / Q000033:anatomy & histology*; D001931:Brain Mapping / Q000379:methods*; D004548:Elasticity; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008297:Male; D012016:Reference Values; D013016:Sound