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An Approach for Ind...
An Approach for Individualized Cochlear Frequency Mapping Determined From 3D Synchrotron Radiation Phase-Contrast Imaging
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- Helpard, Luke (author)
- Western Univ, Sch Biomed Engn, London, ON N6A 3K7, Canada.
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- Li, Hao, 1984- (author)
- Uppsala universitet,Öron-, näs- och halssjukdomar,Uppsala Univ Hosp, Dept Otolaryngol, Uppsala, Sweden.
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- Rohani, Seyed A. (author)
- Western Univ, Dept Otolaryngol Head & Neck Surg, London, ON, Canada.
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- Zhu, Ning (author)
- Univ Saskatchewan, Biomed Imaging & Therapy Facil, Canadian Light Source Inc, Saskatoon, SK, Canada.
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- Rask-Andersen, Helge (author)
- Uppsala universitet,Öron-, näs- och halssjukdomar,Uppsala Univ Hosp, Dept Otolaryngol, Uppsala, Sweden.
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- Agrawal, Sumit (author)
- Western Univ, Sch Biomed Engn, Dept Otolaryngol Head & Neck Surg, Dept Med Biophys, London, ON, Canada.;Western Univ, Dept Elect & Comp Engn, London, ON, Canada.
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- Ladak, Hanif M. (author)
- Western Univ, Sch Biomed Engn, Dept Otolaryngol Head & Neck Surg, Dept Med Biophys, London, ON, Canada.;Western Univ, Dept Elect & Comp Engn, London, ON, Canada.
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Western Univ, Sch Biomed Engn, London, ON N6A 3K7, Canada Öron-, näs- och halssjukdomar (creator_code:org_t)
- Institute of Electrical and Electronics Engineers (IEEE), 2021
- 2021
- English.
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In: IEEE Transactions on Biomedical Engineering. - : Institute of Electrical and Electronics Engineers (IEEE). - 0018-9294 .- 1558-2531. ; 68:12, s. 3602-3611
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Abstract
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- Objective: Cochlear implants are traditionally programmed to stimulate according to a generalized frequency map, where individual anatomic variability is not considered when selecting the centre frequency of stimulation of each implant electrode. However, high variability in cochlear size and spatial frequency distributions exist among individuals. Generalized cochlear implant frequency maps can result in large pitch perception errors and reduced hearing outcomes for cochlear implant recipients. The objective of this work was to develop an individualized frequency mapping technique for the human cochlea to allow for patient-specific cochlear implant stimulation.Methods: Ten cadaveric human cochleae were scanned using synchrotron radiation phase-contrast imaging (SR-PCI) combined with computed tomography (CT). For each cochlea, ground truth angle-frequency measurements were obtained in three-dimensions using the SR-PCI CT data. Using an approach designed to minimize perceptual error in frequency estimation, an individualized frequency function was determined to relate angular depth to frequency within the cochlea.Results: The individualized frequency mapping function significantly reduced pitch errors in comparison to the current gold standard generalized approach.Conclusion and Significance: This paper presents for the first time a cochlear frequency map which can be individualized using only the angular length of cochleae. This approach can be applied in the clinical setting and has the potential to revolutionize cochlear implant programming for patients worldwide.
Subject headings
- MEDICIN OCH HÄLSOVETENSKAP -- Klinisk medicin -- Oto-rhino-laryngologi (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Clinical Medicine -- Otorhinolaryngology (hsv//eng)
- MEDICIN OCH HÄLSOVETENSKAP -- Medicinska och farmaceutiska grundvetenskaper -- Neurovetenskaper (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Basic Medicine -- Neurosciences (hsv//eng)
Keyword
- Frequency measurement
- Three-dimensional displays
- Ear
- Cochlear implants
- Axons
- Electrodes
- Computed tomography
- Cochlea
- cochlear imaging
- cochlear implant
- frequency mapping
- individualized frequency function
- synchrotron radiation phase-contrast imaging
Publication and Content Type
- ref (subject category)
- art (subject category)
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