Purpose:The aim of the current study was to establish a normative data set for the morphometric parameters of the facial nevre(FN)and cochlear nevre(CN)according to age and sex in the adult population,using 3-dimensio...Purpose:The aim of the current study was to establish a normative data set for the morphometric parameters of the facial nevre(FN)and cochlear nevre(CN)according to age and sex in the adult population,using 3-dimensional constructive interference in steady state(3D-CISS)sequence on magnetic resonance imaging.Methods:We retrospectively analyzed 157 ears of 102 adults with no hearing impairment,facial palsy or Meniere's disease.The vertical(VD)and horizontal(HD)diameters as well as cross-sectional areas(CSAs)of the FNs and CNs were measured on the parasagittal oblique image created using the axial 3D-CISS sections passing through the internal acoustic canal.We related the measurement results with side,sex and age.Results:The mean VD,HD and CSA of the FNs were 1.09±0.18 mm,0.84±0.17 mm,and 0.75±0.27mm^2,respectively,whereas those of the CNs were 1.34±0.17 mm,1±0.15mm and 1.06±0.3mm^2,respectively.There was no statistically significant difference between the morphometric parameters of both the nerves according to side or sex(P>0.05).However,except for the CSA of the FNs among males,we found a statistically significant decrease in all the morphometric parameters of both the nerves with ageing(P<0.05).Conclusion:The normative morphometric data obtained in this study can be beneficial in clinical applications for sensorineural hearing loss,facial palsy and Meniere's disease.展开更多
文摘Purpose:The aim of the current study was to establish a normative data set for the morphometric parameters of the facial nevre(FN)and cochlear nevre(CN)according to age and sex in the adult population,using 3-dimensional constructive interference in steady state(3D-CISS)sequence on magnetic resonance imaging.Methods:We retrospectively analyzed 157 ears of 102 adults with no hearing impairment,facial palsy or Meniere's disease.The vertical(VD)and horizontal(HD)diameters as well as cross-sectional areas(CSAs)of the FNs and CNs were measured on the parasagittal oblique image created using the axial 3D-CISS sections passing through the internal acoustic canal.We related the measurement results with side,sex and age.Results:The mean VD,HD and CSA of the FNs were 1.09±0.18 mm,0.84±0.17 mm,and 0.75±0.27mm^2,respectively,whereas those of the CNs were 1.34±0.17 mm,1±0.15mm and 1.06±0.3mm^2,respectively.There was no statistically significant difference between the morphometric parameters of both the nerves according to side or sex(P>0.05).However,except for the CSA of the FNs among males,we found a statistically significant decrease in all the morphometric parameters of both the nerves with ageing(P<0.05).Conclusion:The normative morphometric data obtained in this study can be beneficial in clinical applications for sensorineural hearing loss,facial palsy and Meniere's disease.
