ArticleJournal of otolaryngology - head & neck surgery = Le Journal d'oto-rhino-laryngologie et de chirurgie cervico-faciale2020
Characterization of the human helicotrema: implications for cochlear duct length and frequency mapping.
Article in Journal of otolaryngology - head & neck surgery = Le Journal d'oto-rhino-laryngologie et de chirurgie cervico-faciale, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers, 1 of them a synthesis that pooled it.
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Who cites it
19 citing papers in PubMed, 1 synthesis or guideline pooled it, 37 citations in OpenAlex.
- Pooled it
- The cochlear morphometry compendium: High-resolution synchrotron measurements and normative reference values.Journal of anatomy · 2026Article
- Article
- Pre- and Postoperative Imaging of Cochlear Implantation in Cadaveric Specimens Using Low-Dose Photon-Counting Detector CT.AJNR. American journal of neuroradiology · 2025Article
- Using musical pitch interval comparisons to assess cochlear implant frequency-to-place maps.Frontiers in audiology and otology · 2025Article
- The Greenwood function shows close alignment with pitch perceived by cochlear implant patients with long, flexible electrode arrays and fine-structure stimulation.Frontiers in neuroscience · 2025Article
- Hard X-ray imaging and tomography at the Biomedical Imaging and Therapy beamlines of Canadian Light Source.Journal of synchrotron radiation · 2024Article
- Investigating Additional Cochlear Parameters: A follow-up systematic review and meta-analysis.Journal of otology · 2024Review
- Surgical Considerations in Inner Ear Gene Therapy from Human Temporal Bone Anatomy.The Laryngoscope · 2024Article
- Article
- High-Resolution Phase-Contrast Tomography on Human Collagenous Tissues: A Comprehensive Review.Tomography (Ann Arbor, Mich.) · 2023Review
- Models of Cochlea Used in Cochlear Implant Research: A Review.Annals of biomedical engineering · 2023Review
- Cochlear coverage with lateral wall cochlear implant electrode arrays affects post-operative speech recognition.PloS one · 2023Article
- Reversible contrast enhancement for visualization of human temporal bones using micro computed tomography.Frontiers in surgery · 2022Article
- Review
- Three-dimensional tonotopic mapping of the human cochlea based on synchrotron radiation phase-contrast imaging.Scientific reports · 2021Article
- Review
- Exploring Anatomy-Based Fitting for Cochlear Implantation: A Narrative Review.Journal of otolaryngology - head & neck surgery = Le Journal d'oto-rhino-laryngologie et de chirurgie cervico-facialeReview
- Evaluating the Safety and Efficacy of Robot-Assisted Cochlear Implant Electrode Array Insertion.Journal of otolaryngology - head & neck surgery = Le Journal d'oto-rhino-laryngologie et de chirurgie cervico-facialeArticle
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Authors and funding
5 authors at 2 institutions in 2 countries.
Funding
Abstract
backgroundDespite significant anatomical variation amongst patients, cochlear implant frequency-mapping has traditionally followed a patient-independent approach. Basilar membrane (BM) length is required for patient-specific frequency-mapping, however cochlear duct length (CDL) measurements generally extend to the apical tip of the entire cochlea or have no clearly defined end-point. By characterizing the length between the end of the BM and the apical tip of the entire cochlea (helicotrema length), current CDL models can be corrected to obtain the appropriate BM length. Synchrotron radiation phase-contrast imaging has made this analysis possible due to the soft-tissue contrast through the entire cochlear apex.
methodsHelicotrema linear length and helicotrema angular length measurements were performed on synchrotron radiation phase-contrast imaging data of 14 cadaveric human cochleae. On a sub-set of six samples, the CDL to the apical tip of the entire cochlea (CDL
resultsThe mean helicotrema linear length and helicotrema angular length values were 1.6 ± 0.9 mm and 67.8 ± 37.9 degrees, respectively. Regression analysis revealed the following relationship between CDL
conclusionThis is the first known study to characterize the length of the helicotrema in the context of CDL measurements. It was determined that the distance between the end of the BM and the tip of the entire cochlea is clinically consequential. A relationship was determined that can predict the BM length of an individual patient based on their respective CDL measured to the apical tip of the cochlea.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.