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dc.contributor.authorCohen, Lawrence T.en_US
dc.contributor.authorXU, JINen_US
dc.contributor.authorXu, Shi Angen_US
dc.contributor.authorClark, Graeme M.en_US
dc.date.accessioned2014-05-21T20:27:43Z
dc.date.available2014-05-21T20:27:43Z
dc.date.issued1996en_US
dc.identifier.citationCohen, L. T., Xu, J., Xu, S. A., & Clark, G. M. (1996). Improved and simplified methods for specifying positions of the electrode bands of a cochlear implant array. American Journal of Otology, 17, 859-865.en_US
dc.identifier.urihttp://hdl.handle.net/11343/27477
dc.descriptionThis is a publisher’s version of an article published in American Journal of Otology 1996. This version is reproduced with permission of Lippincott Wilkins & Williams.en_US
dc.description.abstractObjective: To develop techniques for measuring the positions of the individual electrodes of a multiple channel cochlear implant and for estimating associated characteristic frequencies. Background: Information concerning the positions of the individual electrodes of a cochlear implant array is important for analyzing speech perception or psychophysical data and for optimizing speech-processing strategies. This study presents two techniques for obtaining such information from postoperative plain film radiographs. Methods: A template spiral shape, derived from analysis of the radiographs of 30 cochlear implant patients, is used to obtain measurements of the angular positions of the electrode bands within scala tympani. A research technique measures angular positions and estimates characteristic frequencies for all electrode bands but requires that the positions of two cochlear landmarks and all electrode bands be digitized. A clinical technique provides similar angle and frequency estimates but requires a minimum of information to be extracted visually from the radiograph. The lateral positions of the bands are estimated, in the research technique, using mean outer and inner wall functions obtained from 11 Silastic molds of scala tympani. Results: The mean position of the implanted array relative to the mean scala tympani outer wall function was consistent with published histologic observations of implanted temporal bones. Measured angles did not vary greatly with experimenter or with rotation of the cochlea relative to the radiographic beam by up to 20°. Conclusions: The techniques described allow, principally, measurement of the longitudinal positions of the bands of a cochlear implant in scala tympani and estimation of corresponding characteristic frequencies.en_US
dc.relation.ispartofScientific publications, vol.9, 1995-1996, no.902en_US
dc.subjectcochlear implant arrayen_US
dc.subjectelectrode bandsen_US
dc.subjectradiologyen_US
dc.titleImproved and simplified methods for specifying positions of the electrode bands of a cochlear implant arrayen_US
dc.typeJournal Articleen_US
melbourne.source.titleAmerican Journal of Otologyen_US
melbourne.source.volume17en_US
melbourne.source.pages859-865en_US
melbourne.elementsidNA
melbourne.contributor.authorClark, Graeme
melbourne.contributor.authorCOHEN, LAWRENCE
melbourne.contributor.authorXu, Jin
melbourne.accessrightsOpen Access


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