To introduce aplasia or hypoplasia of the vestibulocochlear nerve (VCN) as a possible cause of hearing loss and to identify the magnetic resonance (MR) imaging characteristics of this entity. In seven patients with congenital deafness or unexplained sensorineural hearing loss, MR imaging enabled diagnosis of aplasia or hypoplasia of the VCN. Axial (0.7-mm) three-dimensional Fourier transformation-constructive interference in steady state (3DFT-CISS) images and parasagittal reconstruction images perpendicular on the course of the VCN were obtained. Twenty normal inner ears were also studied; their findings were compared with those of the patients. The facial nerve and inferior and superior vestibular and cochlear branches of the VCN were identified on the MR images in the 20 normal inner ears. Aplasia of the VCN was detected in two patients with normal labyrinths but with a severe stenosis of the internal auditory canal. A common VCN with absence of the cochlear branch was found bilaterally in two patients with a congenital malformation of the labyrinth. A common VCN with absence or hypoplasia of the cochlear branch was found in three patients with normal internal auditory canals and labyrinths. Submillimetric gradient-echo imag...Continue Reading
Abnormal course of the oculomotor nerve on the clivus combined with a petroclival meningioma: case report
Hypoplasia of the bony canal for the cochlear nerve in patients with congenital sensorineural hearing loss: initial observations
MR anatomy of the proximal cisternal segment of the trochlear nerve: neurovascular relationships and landmarks
Trigeminal neuralgia: evaluation of neuralgic manifestation and site of neurovascular compression with 3D CISS MR imaging and MR angiography
Diffusion tensor imaging of the subcortical auditory tract in subjects with congenital cochlear nerve deficiency.
Brain stem and inner ear abnormalities in children with auditory neuropathy spectrum disorder and cochlear nerve deficiency.
Profound hearing loss attributable to cochlear nerve disease: diagnosis with combination of otoacoustic emission and magnetic resonance imaging
Electrophysiologic and behavioral outcomes of cochlear implantation in children with auditory nerve hypoplasia
Evaluation of cochlear nerve size by magnetic resonance imaging in elderly patients with sensorineural hearing loss.
Congenital malformations of the inner ear and the vestibulocochlear nerve in children with sensorineural hearing loss: evaluation with CT and MRI
Narrow duplicated or triplicated internal auditory canal (3 cases and review of literature): can we regard the separated narrow internal auditory canal as the presence of vestibulocochlear nerve fibers?
Aberrant course of the intracranial facial nerve in cases of atresia of the internal auditory canal (IAC).
Temporal bone anomalies in the branchio-oto-renal syndrome: detailed computed tomographic and magnetic resonance imaging findings
Advantages of magnetic resonance imaging over computed tomography in preoperative evaluation of pediatric cochlear implant candidates
Role of electrically evoked auditory brainstem response in cochlear implantation of children with inner ear malformations
CT and MR imaging for pediatric cochlear implantation: emphasis on the relationship between the cochlear nerve canal and the cochlear nerve.
Auditory perception is the ability to receive and interpret information attained by the ears. Here is the latest research on factors and underlying mechanisms that influence auditory perception.