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Journal of Practical Radiology ; (12): 447-450, 2015.
Article in Chinese | WPRIM | ID: wpr-460385

ABSTRACT

Objective To evaluate facial nerve(FN),cochlear nerve(CN)development by magnetic resonance hydrography of the inner ear.Methods 91 cases with normal hearing infants from 0 to 36 months underwent MR head scan and magnetic resonance hydrography of the inner ear.FN,CN long diameter (LD)and short diameter (SD)in oblique sagittal reconstruction imaging were measured.Results 91 cases(182 ears)were divided to 0-12 months as 1st,group (N=35),13-24 months as the 2ed,group (N=36),25-36 months as the 3rd,group (N=20)according to age,in which FN (154 ears,84.6%),CN(170 ears,93.4%)were showed clearly.FN’s LD, SD and Cross-section area(CSA)were 0.76 mm± 0.14 mm,0.50 mm± 0.12 mm,0.30 mm± 0.11 mm,and CN ’s LD,SD and CSA were 0.98 mm± 0.14 mm,0.63 mm± 0.11 mm,0.49 mm± 0.13 mm respectively comparison between groups it was showed that in hearing normal infant growth process,CN,FN development did not vary and change for the left and right side,gender and age.Conclusion MRI measurement of FN,CN diameter and cross-sectional area size provides an important reference on the assess-ment of CN,FN growth condition in infants with normal hearing.

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