Utility of MRIs in adult cochlear implant evaluations

Zi Yang Jiang, Eunice Odiase, Brandon Isaacson, Peter S. Roland, J. Walter Kutz

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Methods: Adult patients (>18 yr old) undergoing cochlear implant evaluation from January 2008 to December 2012 were identified based on CPT code search. Demographics, preoperative MRI findings, operative findings, and audiometric data were collected.

Results: The study included 188 patients. Seventeen (9%) patients had significant otic capsule or vestibulocochlear nerve pathologies: 5 vestibular schwannomas, 4 enlarged vestibular aqueducts, 2 hypoplastic cochlear nerves, 2 labyrinthitis ossificans, 1 cochlear aplasia, 1 posterior semicircular canal malformation, 1 calcified meningioma, and 1 cholesterol granuloma. MRI results were normal (65%) or with findings not directly related to hearing loss (incidental findings, 25%) in the remaining patients. Mean pure tone average (PTA) differences (between the implanted and contralateral ear) did not significantly vary between normal-incidental and abnormal MRI scans (-6.6 dB versus -6.7 dB, p = 0.99) nor did speech discrimination scores (SDS) scores (8.5% versus 8.4%, p = 0.99). No significant difference was found in HINT scores for patients with a normal versus an abnormal MRI (19% versus 16,%, p = 0.62).

Conclusion: Although the majority of precochlear implantation MRIs were normal or demonstrated incidental findings, such as white matter changes, significant MRI findings affecting implantation site and patient counseling were found in almost 10% of patients. Audiogram findings did not correlate with abnormal findings on MRIs. Routine use of MRI in adult cochlear implant candidates may be warranted.

Objectives: To determine the prevalence of MRI abnormalities in adults undergoing cochlear implantation and to correlate abnormalities to audiology data.

Study Design: Case series.

Setting: Academic medical center.

Original languageEnglish (US)
Pages (from-to)1533-1535
Number of pages3
JournalOtology and Neurotology
Volume35
Issue number9
StatePublished - 2014

Fingerprint

Cochlear Implants
Incidental Findings
Ear
Labyrinthitis
Current Procedural Terminology
Vestibulocochlear Nerve
Audiology
Cochlear Implantation
Semicircular Canals
Cochlear Nerve
Speech Perception
Acoustic Neuroma
Cochlea
Meningioma
Granuloma
Hearing Loss
Capsules
Counseling
Cholesterol
Magnetic Resonance Imaging

Keywords

  • Cochlear implantsv
  • Magnetic resonance imaging

ASJC Scopus subject areas

  • Otorhinolaryngology
  • Clinical Neurology
  • Sensory Systems

Cite this

Jiang, Z. Y., Odiase, E., Isaacson, B., Roland, P. S., & Kutz, J. W. (2014). Utility of MRIs in adult cochlear implant evaluations. Otology and Neurotology, 35(9), 1533-1535.

Utility of MRIs in adult cochlear implant evaluations. / Jiang, Zi Yang; Odiase, Eunice; Isaacson, Brandon; Roland, Peter S.; Kutz, J. Walter.

In: Otology and Neurotology, Vol. 35, No. 9, 2014, p. 1533-1535.

Research output: Contribution to journalArticle

Jiang, ZY, Odiase, E, Isaacson, B, Roland, PS & Kutz, JW 2014, 'Utility of MRIs in adult cochlear implant evaluations', Otology and Neurotology, vol. 35, no. 9, pp. 1533-1535.
Jiang, Zi Yang ; Odiase, Eunice ; Isaacson, Brandon ; Roland, Peter S. ; Kutz, J. Walter. / Utility of MRIs in adult cochlear implant evaluations. In: Otology and Neurotology. 2014 ; Vol. 35, No. 9. pp. 1533-1535.
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abstract = "Methods: Adult patients (>18 yr old) undergoing cochlear implant evaluation from January 2008 to December 2012 were identified based on CPT code search. Demographics, preoperative MRI findings, operative findings, and audiometric data were collected.Results: The study included 188 patients. Seventeen (9{\%}) patients had significant otic capsule or vestibulocochlear nerve pathologies: 5 vestibular schwannomas, 4 enlarged vestibular aqueducts, 2 hypoplastic cochlear nerves, 2 labyrinthitis ossificans, 1 cochlear aplasia, 1 posterior semicircular canal malformation, 1 calcified meningioma, and 1 cholesterol granuloma. MRI results were normal (65{\%}) or with findings not directly related to hearing loss (incidental findings, 25{\%}) in the remaining patients. Mean pure tone average (PTA) differences (between the implanted and contralateral ear) did not significantly vary between normal-incidental and abnormal MRI scans (-6.6 dB versus -6.7 dB, p = 0.99) nor did speech discrimination scores (SDS) scores (8.5{\%} versus 8.4{\%}, p = 0.99). No significant difference was found in HINT scores for patients with a normal versus an abnormal MRI (19{\%} versus 16,{\%}, p = 0.62).Conclusion: Although the majority of precochlear implantation MRIs were normal or demonstrated incidental findings, such as white matter changes, significant MRI findings affecting implantation site and patient counseling were found in almost 10{\%} of patients. Audiogram findings did not correlate with abnormal findings on MRIs. Routine use of MRI in adult cochlear implant candidates may be warranted.Objectives: To determine the prevalence of MRI abnormalities in adults undergoing cochlear implantation and to correlate abnormalities to audiology data.Study Design: Case series.Setting: Academic medical center.",
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N2 - Methods: Adult patients (>18 yr old) undergoing cochlear implant evaluation from January 2008 to December 2012 were identified based on CPT code search. Demographics, preoperative MRI findings, operative findings, and audiometric data were collected.Results: The study included 188 patients. Seventeen (9%) patients had significant otic capsule or vestibulocochlear nerve pathologies: 5 vestibular schwannomas, 4 enlarged vestibular aqueducts, 2 hypoplastic cochlear nerves, 2 labyrinthitis ossificans, 1 cochlear aplasia, 1 posterior semicircular canal malformation, 1 calcified meningioma, and 1 cholesterol granuloma. MRI results were normal (65%) or with findings not directly related to hearing loss (incidental findings, 25%) in the remaining patients. Mean pure tone average (PTA) differences (between the implanted and contralateral ear) did not significantly vary between normal-incidental and abnormal MRI scans (-6.6 dB versus -6.7 dB, p = 0.99) nor did speech discrimination scores (SDS) scores (8.5% versus 8.4%, p = 0.99). No significant difference was found in HINT scores for patients with a normal versus an abnormal MRI (19% versus 16,%, p = 0.62).Conclusion: Although the majority of precochlear implantation MRIs were normal or demonstrated incidental findings, such as white matter changes, significant MRI findings affecting implantation site and patient counseling were found in almost 10% of patients. Audiogram findings did not correlate with abnormal findings on MRIs. Routine use of MRI in adult cochlear implant candidates may be warranted.Objectives: To determine the prevalence of MRI abnormalities in adults undergoing cochlear implantation and to correlate abnormalities to audiology data.Study Design: Case series.Setting: Academic medical center.

AB - Methods: Adult patients (>18 yr old) undergoing cochlear implant evaluation from January 2008 to December 2012 were identified based on CPT code search. Demographics, preoperative MRI findings, operative findings, and audiometric data were collected.Results: The study included 188 patients. Seventeen (9%) patients had significant otic capsule or vestibulocochlear nerve pathologies: 5 vestibular schwannomas, 4 enlarged vestibular aqueducts, 2 hypoplastic cochlear nerves, 2 labyrinthitis ossificans, 1 cochlear aplasia, 1 posterior semicircular canal malformation, 1 calcified meningioma, and 1 cholesterol granuloma. MRI results were normal (65%) or with findings not directly related to hearing loss (incidental findings, 25%) in the remaining patients. Mean pure tone average (PTA) differences (between the implanted and contralateral ear) did not significantly vary between normal-incidental and abnormal MRI scans (-6.6 dB versus -6.7 dB, p = 0.99) nor did speech discrimination scores (SDS) scores (8.5% versus 8.4%, p = 0.99). No significant difference was found in HINT scores for patients with a normal versus an abnormal MRI (19% versus 16,%, p = 0.62).Conclusion: Although the majority of precochlear implantation MRIs were normal or demonstrated incidental findings, such as white matter changes, significant MRI findings affecting implantation site and patient counseling were found in almost 10% of patients. Audiogram findings did not correlate with abnormal findings on MRIs. Routine use of MRI in adult cochlear implant candidates may be warranted.Objectives: To determine the prevalence of MRI abnormalities in adults undergoing cochlear implantation and to correlate abnormalities to audiology data.Study Design: Case series.Setting: Academic medical center.

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