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AJNR - American Journal of Neuroradiology

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Age and Sex Differences in the Cerebellum and the Ventral Pons: A Prospective MR Study of Healthy Adults^,

Naftali Raz^a, Faith Gunning-Dixon^a, Denise Head^a, Adrienne Williamson^a and James D. Acker^a

^a From the Department of Psychology (N.R., D.H., A.W.), The University of Memphis, Memphis, TN and the Diagnostic Imaging Center (J.D.A.), Baptist Memorial Hospital-East, Memphis, TN.

View larger version (93K): [in a new window]   FIG 1. Demarcation of the ROIs on the midsagittal slice showing the vermis and the ventral pons: 1, anterior vermis; 2, declive, folium, and tuber; 3, posterior vermis; P, ventral pons. The white lines indicate the direction of alignment.FIG 2. Demarcation of the ROIs on a coronal MR image showing cerebellar hemispheres. All regions were traced manually, and the filled-in regions are presented here for illustration only

View larger version (35K): [in a new window]   FIG 3. Regression of the cerebellar hemispheres volume on age. The volume is not adjusted for height.FIG 4. Regression of the anterior cerebellar vermis area (lingula, centralis, and culmen) on age. The volume is not adjusted for height.FIG 5. Regression of the declive-folium-tuber volume on age. The volume is not adjusted for height

View larger version (22K): [in a new window]   FIG 6. Regression of the posterior cerebellar vermis volume (pyramis, uvula, and nodulus) on age. The volume is no adjusted for height.FIG 7. Regression of the ventral pons volume on age. The volume is not adjusted for height

View larger version (33K): [in a new window]   FIG 8. A bar diagram for comparison of the magnitude of sex differences in regional volumes of the cerebellum and pons. The vertical lines indicate half of the 95% confidence range of the effect size. The effects were estimated from means and standard deviations adjusted for height