Volumetric Asymmetry and Differential Aging Effect of the Human Caudate Nucleus in Normal Individuals: A Prospective MR Imaging Study

Koji Yamashita, Takashi Yoshiura, Akio Hiwatashi, Tomoyuki Noguchi, Osamu Togao, Yukihisa Takayama, Eiki Nagao, Hironori Kamano, Masamitsu Hatakenaka, Hiroshi Honda

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Purpose: The purpose of this study was to examine interhemispheric asymmetry in volume of the caudate nucleus and its age dependency. Methods: High-resolution T1-weighted brain magnetic resonance (MR) images were obtained for each subject using a 3-dimensional fast field-echo pulse sequence. The volumes of the bilateral caudate nuclei on MR images were measured using an automated method. Right-to-left comparison was made using paired t-test. Age-related change of right-to-left volume ratio (R/L ratio) was examined using Pearson's correlation coefficient. Results: Fifty healthy right-handed Japanese male subjects (age 12 to 67 years, mean 39.6 years) were involved in this study. The volume of right caudate nucleus was larger than the left in 48 of 50 subjects (P < .001). R/L ratio increased with age (r=420, P < 01). Conclusions: Our results confirmed the rightward volumetric asymmetry of caudate nucleus in right-handed individuals, and revealed that this asymmetry becomes notable with age.

Original languageEnglish
Pages (from-to)34-37
Number of pages4
JournalJournal of Neuroimaging
Issue number1
Publication statusPublished - Jan 1 2011


All Science Journal Classification (ASJC) codes

  • Radiology Nuclear Medicine and imaging
  • Clinical Neurology

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