Sex- and Age-Related Features of the Encephalometric Parameters of the Brain Hemispheres in Children of the Second Childhood Period.

We performed a retrospective analysis of the encephalometric parameters of the brain hemispheres in children aged 8 years (30 boys and 30 girls) and 11 years (30 boys and 30 girls). The variability of the parameters of the brain hemispheres depending on age and sex was studied. In 8-year-old children, sex differences were revealed in a significant number of basic parameters: the length of the right and left hemispheres and the lengths of the left frontal lobe, right parietal lobe, right and left occipital lobes.

[Morphometric assessment of gender differences in human constitution].

In 154 girls and 58 young men aged 17-21 years, a new body mass index (BMI2 = M/H3), body form index (BFI=S/M2/3), body build index IBBI = (M/H3)1/2], and body fatness index (BFI = M/HC2) were determined; in which C, H, M, S correspond to the wrist circumference, body height, body mass and body area. It was shown that all the indices mentioned demonstrated highly significant gender differences if calculation of each of them was based, not on the body mass, but on a conventional body volume obtained by division of the factual body mass by the average statistical body density corresponding to 1.064 kg/dm3 in men and 1.

Morphometric characteristics of the brain in children aged one year (magnetic resonance tomography data).

The aim of the present work was to identify complex morphometric characteristics of the living brain in children aged one year with assessment of individual variation (sexual, interhemisphere) by magnetic resonance tomography. The results demonstrated sexual dimorphism in brain sizes: endbrain sizes were generally larger in boys, while structures in the stem part of the brain were larger in girls. Interhemisphere asymmetry of the brain was found in one-year-old children - in most cases, lobe sizes were greater in the right hemisphere as compared with the left.

[Brain morphometric characteristics of one-year-old infants (according to magnetic resonance tomography data)].

The present study was designed to give the integrated intravital morphometric characteristic of the brain of one-year-old infants taking into account their individual variation (sex-related, interhemispheric) using magnetic resonance tomography. The research has revealed a sexual dimorphism of the brain dimensions: telencephalic dimensions were found to prevail in boys, while the dimensions of the brainstem structures were prevalent in girls. The interhemispheric asymmetry was detected in the brain of one-year-old infants; in most cases there was a prevalence of the dimensions of the right hemisphere lobes over those ones of the left hemisphere.