| Computed tomography and/or magnetic resonance imaging before pediatric cochlear implantation? Developing an investigative strategy. | |
| | |
MedLine Citation:
|
PMID: 17414036 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
OBJECTIVE: To investigate and compare the usefulness of preoperative magnetic resonance (MR) imaging and high-resolution temporal bone computed tomography (HRCT) in pediatric cochlear implant candidates. STUDY DESIGN: Prospective. SETTING: Tertiary referral center. PATIENTS: A cohort of 92 pediatric patients with profound hearing. Inclusion criteria were MR, computed tomography, and cochlear implantation. INTERVENTION. DIAGNOSTIC: All patients had preoperative imaging of the petrous temporal bone (HRCT, T2-weighted fast spin echo, axial 3D Fast Imaging Employing Steady-state Acquisition [FIESTA] MR) and brain (Fast Fluid-attenuated Inversion-recovery [FLAIR] MR). MAIN OUTCOME MEASURE(S): Overall prevalence of inner ear dysplasias in this population and comparison of detection rates between HRCT, T2 Fast Spin Echo (FSE), and FIESTA MR sequences. RESULTS: Radiological abnormalities were observed in 32 and 59% of MR and HRCT temporal bone, respectively. Synchronous intracranial findings were noted in 40% on brain MR. Common vestibulocochlear nerve was observed in 3% ears and directed side of implantation. Consistent discrepancies noted on HRCT were inability to diagnose early obliterative labyrinthitis and presence of the cochlear nerve in the internal auditory canal. With respect to MR, enlarged vestibular aqueducts and narrow cochlear nerve canals were consistently under identified. CONCLUSION: Dual-modality imaging with HRCT and MR of petrous bone and MR brain in the precochlear implant pediatric population detects abnormalities related to deafness, which would not otherwise be found using either modality alone. There is overlap between the imaging modalities in the type of abnormalities detected, and we present a case for selective use of HRCT within a diagnostic algorithm, using the patient risk factors we have identified. |
| | |
Authors:
|
Keith Trimble; Susan Blaser; Adrian L James; Blake C Papsin |
Related Documents
:
|
9106296 - Contrast enhancement of the facial nerve on mri: normal or pathological? 18225606 - Mri in patients with otovestibular complaints of unknown origin. 2512536 - Mri findings in two cases of acute facial paralysis. 8837796 - Ulnar nerve entrapment at the elbow: correlation of magnetic resonance imaging, clinica... 10489496 - Meningoencephalitis caused by a novel paramyxovirus: an advanced mri case report in an ... 2006276 - Graves ophthalmopathy: role of mr imaging in radiation therapy. |
Publication Detail:
|
Type: Journal Article |
Journal Detail:
|
Title: Otology & neurotology : official publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology Volume: 28 ISSN: 1531-7129 ISO Abbreviation: Otol. Neurotol. Publication Date: 2007 Apr |
Date Detail:
|
Created Date: 2007-04-06 Completed Date: 2007-06-19 Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 100961504 Medline TA: Otol Neurotol Country: United States |
Other Details:
|
Languages: eng Pagination: 317-24 Citation Subset: IM |
Affiliation:
|
Department of Otolaryngology-Head & Neck Surgery, Hospital for Sick Children, Toronto, Canada. keith.trimble@utoronto.ca |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Adolescent Bone Diseases, Developmental / epidemiology, pathology, radiography Child Child, Preschool Cochlear Implantation* Cochlear Nerve / pathology, physiopathology Diagnosis, Differential Female Health Planning* Hearing Loss, Sensorineural / diagnosis, physiopathology, surgery* Humans Labyrinthitis / diagnosis, physiopathology Magnetic Resonance Imaging* Male Petrous Bone / pathology, radiography Preoperative Care* Prevalence Prospective Studies Radiography, Dual-Energy Scanned Projection Temporal Bone / pathology, radiography Tomography, X-Ray Computed* Vestibular Aqueduct / physiopathology |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Intratympanic methylprednisolone for sudden sensorineural hearing loss.
Next Document: Percutaneous cochlear access using bone-mounted, customized drill guides: demonstration of concept i...