Background: This study aimed to reveal the change in olfactory bulbus volume (OBV) and olfactory sulcus depth (OSD) in healthy Turkish paediatric individuals between 1 month and 18 years of age with 3 Tesla magnetic resonance imaging (MRI), taking into account different age groups and gender factors.
Materials And Methods: In this retrospective study, 190 paediatric individuals who underwent cranial MRI were evaluated. Healthy paediatric cases were divided into four groups as infantile period (first 24 months when cerebral myelinisation was completed), early childhood (2-6 years), childhood (6-12 years) and adolescence (12-18 years). OBV and OSD measurements were performed on coronal T2-weighted brain MRI by 3 Tesla magnetic resonance scan. The mean, right and left OBVs and OSDs were used for evaluation.
Results: The mean age was 9.9 ± 7.5 months for the infantile period, 4.5 ± 1.3 years for early childhood, 9.3 ± 1.7 years for childhood and 15.2 ± 1.7 years for adolescence. Mean, right and left OBV was found to be slightly larger in male children than in female children (p = 0.015, p = 0.033 and p = 0.010, respectively). There was no statistical difference between the genders for mean, right and left OSD (p = 0.559, p = 0.536 and p = 0.598, respectively). Among the age groups, the values of the 3rd and 4th groups in terms of mean, right and left OBV were higher than in the other two groups (p < 0.001). In terms of OSD, mean, right and left values were higher in group 2, 3 and 4 than in group 1 (p < 0.001).
Conclusions: These data differ by paediatric age group and gender for the development of OBV and OSD. Normal values for the paediatric age group and gender should be calculated to detect olfactory dysfunction.
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