title: MRI evaluation of lateral geniculate body in normal aging brain using quantitative susceptibility mapping.
abstract: OBJECTIVE
  To investigate the changes of lateral geniculate body (LGB) in the normal aging brain using quantitative susceptibility mapping (QSM) technique.
  
  
  METHODS
  Magnetic resonance (MR) phase and magnitude images were acquired from enhanced gradient echo T2 star weighted angiography sequence with 16 echoes on 3.0T MR system using the head coil with 32 channels. Morphology Enabled Dipole Inversion (MEDI) method was applied for QSM, and the susceptibility value of LGB was measured by region of interest (ROI) drawn manually on three orthogonal planes.
  
  
  RESULTS
  LGB of the middle-aged group had a higher susceptibility value (0.16±0.05 ppm) than that of the youth group (0.12±0.05 ppm) and elderly group (0.13±0.03 ppm) (all P<0.05). Partial correlation analysis demonstrated that there was significantly positive correlation between susceptibility value and age in the youth group (r=0.71, P<0.05).
  
  
  CONCLUSIONS
  LGB could clearly be identified on QSM in the brain in vivo.
authors.affiliation: Department of Radiology, Chinese People's Liberation Army General Hospital, Beijing 100853, China.
authors.forename: Meng-qi
authors.initials: MQ
authors.lastname: Liu
authors.affiliation: Department of Radiology, Chinese People's Liberation Army General Hospital, Beijing 100853, China.
authors.forename: Zhi-ye
authors.initials: ZY
authors.lastname: Chen
authors.affiliation: Department of Radiology, Chinese People's Liberation Army General Hospital, Beijing 100853, China.
authors.forename: Xiang-bing
authors.initials: XB
authors.lastname: Bian
authors.affiliation: Department of Radiology, Chinese People's Liberation Army General Hospital, Beijing 100853, China.
authors.forename: Meng-yu
authors.initials: MY
authors.lastname: Liu
authors.affiliation: Department of Radiology, Chinese People's Liberation Army General Hospital, Beijing 100853, China.
authors.forename: Shen-yuan
authors.initials: SY
authors.lastname: Yu
authors.affiliation: Department of Radiology, Chinese People's Liberation Army General Hospital, Beijing 100853, China.
authors.forename: Lin
authors.initials: L
authors.lastname: Ma
mesh_terms: D000328:Adult; D000368:Aged; D001931:Brain Mapping / Q000379:methods*; D005260:Female; D005829:Geniculate Bodies / Q000502:physiology*; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008297:Male; D008875:Middle Aged; D012016:Reference Values; D055815:Young Adult