The aim of the study is to define age and gender regularities of the linear morphometric parameters of the liver in children and adolescents on the basis of intravital imaging findings.Material and methods. The authors analyzed computed tomograms of the abdominal cavity in 75 children without visible pathology. All patients were divided into 4 groups depending on their age: early childhood, first childhood, second childhood, adolescence. The transverse, anteroposterior and vertical dimensions of the right and left hepatic lobes were investigated on 16-slice computed tomographs. The obtained findings were processed using variational statistical analysis, the mean value (M), standard error (m) and the statistical significance were defined using the Student's t-test.Results. There was a significant increase in the anteroposterior size of the right hepatic lobe in separate sections at different age periods. A statistical significance between the parameters of the anteroposterior size of the right hepatic lobe was registered in girls and boys within the following groups: on one section in the 2nd group of patients, on two sections in the 4th group of patients. A statistical significance between the parameters of the transverse size of the right hepatic lobe was registered on one section (ThXII) in the 2nd and 3rd groups, and on two (ThXI and LI) and three (ThXI, ThXII and LI) sections in the 3rd and 4th groups of girls and boys, respectively. A statistical significance between the parameters of the transverse size of the right hepatic lobe in girls and boys were recorded only in the 4th group on three sections (ThXI, ThXII and LI). The vertical size of the right hepatic lobe was significantly higher in the 2nd and 4th groups, and the differences in the parameters between girls and boys were noted only among adolescents. A significant increase in the anteroposterior size of the left hepatic lobe was registered only in girls of the 2nd and 3rd groups on two sections (ThXII and LI); a significant increase in the transverse size was only registered at the LI level in these groups of patients. A significant increase in the vertical size of the left hepatic lobe was only detected in girls of the first childhood compared with girls of the early childhood. No statistical significance was registered for any of the linear parameters of the left hepatic lobe between girls and boys of the same groups.Conclusion. Thus, there was a significant increase in the anteroposterior and transverse dimensions of the right hepatic lobe in separate sections and an increase in the vertical size between individual groups of the studied patients, as well as a statistical significance between girls and boys of the same group. A significant increase in the anteroposterior and transverse dimensions of the left hepatic lobe was detected only in girls of the 2nd and 3rd groups if compared with the girls of the 1st group. No significant differences were registered between girls and boys of the same groups for any of the linear parameters of the left hepatic lobe.

The aimof the study is to establish age and gender patterns of morphometric parameters of the gallbladder in children and adolescents based on the findings of intravital imaging.Material and methods.The authors analyzed computed tomograms of the abdominal cavity of 75 children having no visible pathologies of the abdominal organs. The participants were divided into 4 agegroups: early childhood,  first  childhood,  second  childhood,  adolescence.  The diagnostic  procedure was  performed  on 16-slice computed tomographs; a longitudinal size, a distance between the right and left walls, a distance between the anterior  and posterior  walls  and  a  volume  of  the  gallbladder  were  detected  in  the  study.  The data  obtained  were processed using variational and statistical methods,the mean value (M), standard error (m) and the significance of differences according to the Student's t-test were determined.Results.The longitudinal size of the gallbladder averaged 4.5±0.1 cm in the entire sample, 4.3±0.1 cm in girls, and 4.6±0.1 cm in boys; there was detected an increase from 3.7±0.2 cm in group 1 to 4.8±0.3 cm in group 4 (p=0.023). The transverse size of the gallbladder was 1.8 ± 0.1 cm, while in girls  -1.8 ± 0.1 cm, and in boys  - 1.7  ±  0.1  cm.  The  value  of  this  parameter  increased in  all  examined  children  from  1.3  ±  0.1  cm  in  group  1  to 2.1 ± 0.1 cm in group 4 (p = 0.001). In patients of all groups the average value of the distance between the anterior and  posterior  walls  of  the  gallbladder  was  2.8±0.1  cm.  In  girls  this  parameter  was  2.8±0.1  cm,  and  in  boys  -2.9±0.1  cm.  This  parameter  increased  in  all  patients  from  2.4±0.1  cm  in  group  1  to  3.4±0.1  cm  in  group  4 (p=0.001). The volume of the gallbladder constituted 13.6±0.8 cm3, in girls this parameter was 12.8±1.0 cm3, and in  boys  - 14.2±1.3  cm3.  The  volume  of  the  gallbladder  increased  in  all  patients  from  7.3±1.1  cm3  in  group  1  to 19.4±1.9 cm 3 in group 4 (p=0.001).Conclusion.The most significant increase in most studied parameters (p≤0.05) was noted in children of the first childhood group compared with children of the early childhood group, and in adolescents co mpared with children  from  the  second  childhood  group  without  differentiation  by  gender. A  significant  increase  in  the  morphometric parameters of the gallbladder was determined mainly in boys of the first childhood group compared with  children  of  the  early  childhood  group  and  in  adolescents  compared with  children  of  the  second  childhood group. In girls there was observed a tendency to a smooth increase in parameters from group to group; a significant increase was determined by the parameter “the distance between the anterior and posterior walls” in children of the second age group compared with children of the first age group (p=0.022). Most of the gallbladder morphometric parameters did not significantly differentiate in girls and boys of the same age group.