Evaluation of Cochlear Nerve Imaging in Severe Congenital Sensorineural Hearing Loss

ORL ◽  
2007 ◽  
Vol 69 (3) ◽  
pp. 198-202 ◽  
Author(s):  
Sachiko Komatsubara ◽  
Atsushi Haruta ◽  
Yuki Nagano ◽  
Takao Kodama
Keyword(s):  
Hearing Loss ◽  
Sensorineural Hearing Loss ◽  
Cochlear Nerve ◽  
Sensorineural Hearing ◽  
Nerve Imaging

Cochlear nerve anomalies in paediatric single-sided deafness – prevalence and implications for cochlear implantation strategies

2020 ◽  
pp. 1-4
Author(s):  
K Pollaers ◽  
A Thompson ◽  
J Kuthubutheen
Keyword(s):  
Magnetic Resonance Imaging ◽  
Hearing Loss ◽  
Magnetic Resonance ◽  
Sensorineural Hearing Loss ◽  
Cochlear Nerve ◽  
Sensorineural Hearing ◽  
Resonance Imaging ◽  
Bilateral Sensorineural Hearing Loss ◽  
Single Sided Deafness ◽  
Cochlear Nerve Hypoplasia

Abstract Objective To determine the prevalence of cochlear nerve anomalies on magnetic resonance imaging in patients with unilateral or bilateral sensorineural hearing loss. Methods A retrospective case series was conducted at a tertiary referral centre. The inclusion criteria were paediatric patients with bilateral or unilateral sensorineural hearing loss, investigated with magnetic resonance imaging. The primary outcome measure was the rate of cochlear nerve hypoplasia or aplasia. Results Of the 72 patients with unilateral sensorineural hearing loss, 39 per cent (28 cases) had absent or hypoplastic cochlear nerves on the affected side. Fifteen per cent (11 cases) had other abnormal findings on magnetic resonance imaging. Eighty-four patients had bilateral sensorineural hearing loss, of which cochlear nerve hypoplasia or aplasia was identified only in 5 per cent (four cases). Other abnormal findings were identified in 14 per cent (12 cases). Conclusion Paediatric patients with unilateral sensorineural hearing loss are more likely to have cochlear nerve anomalies than those patients with bilateral sensorineural hearing loss. This has important implications regarding cochlear implantation for patients with single-sided deafness.

Cochlear Nerve Dimensions in Asymetrical Sensorineural Hearing Loss: A Morphometric Study

2021 ◽  
Vol 22 (2) ◽  
pp. 115-119
Author(s):  
Ayşe Pelin Yiğider ◽  
Ömer Yıldız ◽  
Levent Küfeciler ◽  
Hasan Emre Koçak ◽  
Harun Acıpayam ◽  
...  
Keyword(s):  
Hearing Loss ◽  
Sensorineural Hearing Loss ◽  
Cochlear Nerve ◽  
Sensorineural Hearing ◽  
Morphometric Study

Proportion of bony cochlear nerve canal anomalies in unilateral sensorineural hearing loss in children

2013 ◽  
Vol 77 (4) ◽  
pp. 530-533 ◽  
Author(s):  
Jong Sook Yi ◽  
Hyun Woo Lim ◽  
Byung Chul Kang ◽  
Sun-Young Park ◽  
Hong Ju Park ◽  
...  
Keyword(s):  
Hearing Loss ◽  
Sensorineural Hearing Loss ◽  
Cochlear Nerve ◽  
Sensorineural Hearing

Bony cochlear nerve canal stenosis in pediatric unilateral sensorineural hearing loss

2018 ◽  
Vol 106 ◽  
pp. 72-74 ◽  
Author(s):  
Chae-Hyun Lim ◽  
Ji Hyung Lim ◽  
Doyoun Kim ◽  
Ho sung Choi ◽  
Dong-Hee Lee ◽  
...  
Keyword(s):  
Hearing Loss ◽  
Sensorineural Hearing Loss ◽  
Cochlear Nerve ◽  
Sensorineural Hearing ◽  
Canal Stenosis

Implication of Bony Cochlear Nerve Canal on Hearing in Patients with Congenital Unilateral Sensorineural Hearing Loss

2012 ◽  
Vol 17 (5) ◽  
pp. 282-289 ◽  
Author(s):  
Jeong Hun Jang ◽  
Ji-Hoon Kim ◽  
Jae Chul Yoo ◽  
Chang-Hee Kim ◽  
Min Soo Kim ◽  
...  
Keyword(s):  
Hearing Loss ◽  
Sensorineural Hearing Loss ◽  
Cochlear Nerve ◽  
Sensorineural Hearing

A Case of Cochlear Nerve Deficiency Without Profound Sensorineural Hearing Loss

2011 ◽  
Vol 32 (4) ◽  
pp. 529-532 ◽  
Author(s):  
Ikuyo Miyanohara ◽  
Keiichi Miyashita ◽  
Koji Takumi ◽  
Masayuki Nakajo ◽  
Yuichi Kurono
Keyword(s):  
Hearing Loss ◽  
Sensorineural Hearing Loss ◽  
Cochlear Nerve ◽  
Sensorineural Hearing ◽  
Cochlear Nerve Deficiency

Magnetic resonance imaging versus computed tomography in pre-operative evaluation of cochlear implant candidates with congenital hearing loss

2002 ◽  
Vol 116 (10) ◽  
pp. 804-810 ◽  
Author(s):  
Levent Sennaroglu ◽  
Isil Saatci ◽  
Ayse Aralasmak ◽  
Bulent Gursel ◽  
Ergin Turan
Keyword(s):  
Magnetic Resonance Imaging ◽  
Hearing Loss ◽  
Magnetic Resonance ◽  
Cochlear Implant ◽  
Sensorineural Hearing Loss ◽  
Internal Auditory Canal ◽  
Cochlear Nerve ◽  
Sensorineural Hearing ◽  
Congenital Hearing Loss ◽  
Resonance Imaging

Recent reports indicate that the cochlear nerve may be absent in some cases of congenital sensorineural hearing loss. The aim of this prospective study was to determine the incidence of cochlear nerve anomaly in cochlear implant candidates with congenital hearing loss using magnetic resonance imaging (MRI). Twenty-seven patients with congenital profound bilateral sensorineural hearing loss who were being evaluated for the cochlear implant procedure were studied.These patients had high-resolution computerized tomography (CT), through the petrous bone in axial sections. MRI examinations consisted of T1 and turbo spin echo (TSE) T2-weighted 3 mm axial images, and additional 3D Fourier Transform T2-weighted TSE sequences obtained on three different planes (axial, perpendicular and parallel to the internal auditory canal (IAC) i.e. oblique sagittal and coronal, respectively) for the purpose of cochlear nerve demonstration. Results showed that all of the 14 patients with normal CT of the temporal bone, had four distinct nerves in the distal part of the IAC on TSE-MRI. Thirteen patients demonstrated various bony malformations of the cochleovestibular system on CT. MRI revealed the absence of the cochleovestibular nerve in four patients where the IAC was very narrow or completely absent on CT. One patient with severe Mondini malformation who had an enlarged IAC demonstrated an isolated absent cochlear nerve.

scholarly journals Bony cochlear nerve canal in children with bilateral profound sensorineural hearing loss – a pilot study

2021 ◽  
Vol 1 (2) ◽  
pp. 70-77
Author(s):  
Marija Dokoska ◽  
Marina Davceva Chakar ◽  
Sonja Nikolova ◽  
Gordana Kiteva-Trencevska
Keyword(s):  
Hearing Loss ◽  
Pilot Study ◽  
Sensorineural Hearing Loss ◽  
Cochlear Nerve ◽  
Sensorineural Hearing
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