Normative diameters and effects of aging on the cochlear and facial nerves in normal-hearing Korean ears using 3.0-tesla magnetic resonance imaging

The Laryngoscope
Woo Seok KangKwang-Sun Lee

Abstract

To assess the normative size of the cochlear nerve (CN) and facial nerve (FN) in normal-hearing ears and to determine whether nerve size varies with age. Cross-sectional. We included 169 ears with normal hearing between 2005 and 2010. The height, width, and cross-sectional area (CSA) of the CN and FN in the middle of the internal auditory canal were measured on oblique sagittal images of 3.0-T magnetic resonance imaging. Results were compared by age. Young subjects were divided into three age groups, 0-5, 6-10, and 11-15 years. Subjects over age 40 years were divided into groups at 10-year intervals. Mean age was 32.6 years (range, 0.75-79 years). We found that the CN had significantly greater vertical (1.10 ± 0.21 mm vs. 0.95 ± 0.21 mm) and horizontal (1.11 ± 0.20 mm vs. 1.03 ± 0.22 mm) diameters than the FN. The CSA of the CN was larger than that of the FN (0.98 ± 0.33 mm(2) vs. 0.79 ± 0.31 mm(2) ). Except for the CN vertical diameter, there were no significant differences between right and left ears. Sex did not affect the nerve size. Although the CN was not affected by age, the FN vertical diameter and CSA of children <5 years were significantly smaller than those of children aged >5 years. The size of the two nerves did no...Continue Reading

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Citations

Jul 15, 2015·Clinical Neuroradiology·A Giesemann, E Hofmann
Nov 1, 2013·Magnetic Resonance in Medical Sciences : MRMS : an Official Journal of Japan Society of Magnetic Resonance in Medicine·Rei NakamichiShinji Naganawa
May 12, 2015·International Journal of Pediatric Otorhinolaryngology·Jing LouGuang-Bin Wang
Apr 8, 2020·Skin Research and Technology : Official Journal of International Society for Bioengineering and the Skin (ISBS) [and] International Society for Digital Imaging of Skin (ISDIS) [and] International Society for Skin Imaging (ISSI)·Itsuko OkudaNaoki Yoshioka
Dec 7, 2018·Journal of Clinical Medicine·Sang-Yeon LeeByung Yoon Choi
Jun 7, 2017·European Archives of Oto-rhino-laryngology : Official Journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : Affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery·Annika HennebergerWilhelm Flatz
Dec 29, 2020·International Journal of Clinical Practice·Osman ErdoğanDerya Ümit Talas
Mar 2, 2016·Otology & Neurotology : Official Publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology·Maximilian SchulzeTill-Karsten Hauser

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