Sep 22, 2020 · MRI is firmly established as an essential modality in the imaging of the temporal bone and lateral skull base. It is used to evaluate normal anatomic structures, evaluate for vestibular schwannomas, assess for inflammatory and/or infectious processes, and detect residual and/or recurrent cholesteatoma.

Jul 29, 2024 · The cochlea (plural: cochleae) is part of the inner ear osseous labyrinth found in the petrous temporal bone. It contains the cochlear duct, part of the membranous labyrinth which senses hearing.

Jul 1, 2009 · MRI, on the other hand, can show a fluid-filled cochlea while CT depicts small calcifications. Therefore, a combination of both modalities can be used. MRI can also demonstrate absence of the 8th nerve, which precludes cochlear implantation.

Jul 1, 1993 · In certain patients, the areas of enhancement may correlate with specific hearing loss in the frequencies mapped by the enhancing segment. Enhancement of the cochlea may represent radiologic evidence of cochlear inflammation secondary to a perilymphatic fistula.

Dec 9, 2011 · On MRI, thickening (a, b: 3D T2 TSE) and enhancement (c, d: contrast-enhanced T1) of the seventh and eighth cranial nerves as well as the cochlea is seen bilaterally, suggestive of a systemic infectious or inflammatory disease.

Mar 9, 2023 · CT and MRI are complementary in the preoperative assessment performed before cochlear implantation (3). In neonates and infants, MRI of the inner ears and internal auditory canals (IACs) may be performed by using a feed-and-sleep technique, while in toddlers and young children, short sedation or general anesthesia is usually required.

Oct 2, 2024 · This anatomical module of e-Anatomy is dedicated to the anatomy of the inner ear (cochlea, bony and membranous labyrinth) and the normal MRI appearance of the facial and vestibulocochlear nerves in the internal acoustic meatus on …

Apr 6, 2022 · Based on the MRI findings, a diagnosis of a dermoid cyst that had ruptured into the endolymphatic sac and then into the cochlea and vestibule was made. Preoperative PTA average was 71 dB and speech discrimination score was 24% on the right side, and the left ear showed normal hearing level.

Apr 1, 2002 · Absence or reduction in caliber of the cochlear nerve (deficiency) has been described in association with congenital sensorineural hearing loss (SNHL). Depiction of cochlear nerve integrity may be important for diagnosis and management of SNHL.

The study was performed to demonstrate the capabilities of MRI at high resolution on the human cochlea, vestibular structures, and facial nerve. Comparative analyses of MRI anatomy with that seen on histological dissection were made.