{
  "abstract": "AIM: This study aims to (1) review the literature on cochlear size, measured by the A-value, to assess reported variation across studies, and (2) consolidate cochlear parameters-specifically basal turn diameter (A-value) and width (B-value)-measured using the standardized DICOM viewer OTOPLAN®, and compare these with published data. METHODS: A scoping literature review was conducted using the search term \"diameter of cochlear basal turn\" to identify studies reporting A-value measurements. To complement this, cochlear measurements obtained with OTOPLAN® were collected from clinical collaborators across multiple international centres. The ratio of B- to A-values, which defines the cochlear basal turn shape, was calculated as previously described by Khurayzi et al. (2021). RESULTS: The literature review identified 38 studies comprising 5,206 A-value measurements (average: 9.08 mm; range: 8.01-10.03 mm). Additionally, 5,580 OTOPLAN® measurements were collected from 43 clinics across 25 countries (mean: 9.07 mm; range: 6.67-11.45 mm). Overall, 68.7% of cochleae exhibited an elliptical basal turn shape. CONCLUSION: Using a large, international multicentre dataset and a standardized measurement tool, this study demonstrates substantial variation in cochlear size and shape across clinical cohorts from different regions. The mean A-value (9.07 mm) is consistent with previously published literature, while the wider observed range highlights greater anatomical variability within a multicentre clinical population than previously reported. The majority of cochleae demonstrate an elliptical basal turn configuration.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": null,
  "author_total": 52,
  "authors": [
    {
      "name": "Andrea Schreier"
    },
    {
      "name": "Mario Zernotti"
    },
    {
      "name": "Aanand Acharya"
    },
    {
      "name": "Robert Eisenberg"
    },
    {
      "name": "Maryam Sahwan"
    },
    {
      "name": "Mohamed Alshehabi"
    },
    {
      "name": "Vincent van Rompaey"
    },
    {
      "name": "Marc Lammers"
    },
    {
      "name": "Anandhan Dhanasingh"
    },
    {
      "name": "Suijun Chen"
    },
    {
      "name": "Lian Hui"
    },
    {
      "name": "Ahmed Mustafa"
    },
    {
      "name": "Nader El Feky"
    },
    {
      "name": "Ahmed Alshamsi"
    },
    {
      "name": "Ahmad Alamadi"
    },
    {
      "name": "Sebastian Schmerber"
    },
    {
      "name": "Benoît Godey"
    },
    {
      "name": "Estella Bilson-Amoah"
    },
    {
      "name": "Ramandeep Virk"
    },
    {
      "name": "Himanshu Swami"
    },
    {
      "name": "Abha Kumari"
    },
    {
      "name": "Shin-Ichi Usami"
    },
    {
      "name": "Hidekane Yoshimura"
    },
    {
      "name": "Grace Mwangi"
    },
    {
      "name": "Serah Ndegwa"
    },
    {
      "name": "Mutlaq Al-Sihan"
    },
    {
      "name": "Mariam Alkandari"
    },
    {
      "name": "Adekunle Adeyemo"
    },
    {
      "name": "Khalid Al Zaabi"
    },
    {
      "name": "Nasser Al Tamami"
    },
    {
      "name": "Piotr Henryk Skarzynski"
    },
    {
      "name": "Adam Walkowiak"
    },
    {
      "name": "Sima Sugarova"
    },
    {
      "name": "Vladislav Kuzovkov"
    },
    {
      "name": "Fida Almuhawas"
    },
    {
      "name": "Fahad Altamami"
    },
    {
      "name": "Cristina Alonso"
    },
    {
      "name": "Luis Lassaletta"
    },
    {
      "name": "Louis Hofmeyr"
    },
    {
      "name": "Mohamed Razwi Ismail Ahmed"
    },
    {
      "name": "Elnemarie Burden"
    },
    {
      "name": "Johan Grobbelaar"
    },
    {
      "name": "Shaban Mawala"
    },
    {
      "name": "Ali Jaffer"
    },
    {
      "name": "Amina Seguya"
    },
    {
      "name": "Linor Jones"
    },
    {
      "name": "Edward Flook"
    },
    {
      "name": "Anne Morgan Selleck"
    },
    {
      "name": "Camille Dunn"
    },
    {
      "name": "James Lin"
    },
    {
      "name": "Justus Müller-Goebel"
    },
    {
      "name": "Joachim Müller"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/6cc878hpmfc0m.bib",
  "cited_by": 1,
  "doi": "10.1016/j.heares.2026.109708",
  "fulltext_url": null,
  "id": "6cc878hpmfc0m",
  "issns": [
    "0378-5955",
    "1878-5891"
  ],
  "landing_url": "https://univ-rennes.hal.science/hal-05825566v1",
  "language": "en",
  "licence": "CC-BY",
  "licence_label": "CC BY",
  "licence_source": "journal",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "hal",
      "0.sdv"
    ],
    [
      "openalex",
      "2809|Hearing, Cochlea, Tinnitus, Genetics"
    ]
  ],
  "openalex": "W7164746279",
  "pdf_url": null,
  "pmcid": null,
  "pmid": "42391975",
  "published": "2026-10-20",
  "publisher": "Elsevier",
  "ris": "https://research.draconitic.com/paper/6cc878hpmfc0m.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:59Z",
      "native_id": "hal-05825566",
      "source": "hal",
      "url": "https://univ-rennes.hal.science/hal-05825566v1"
    }
  ],
  "subjects": [
    {
      "field": "biology",
      "origin": "openalex:2809|Hearing, Cochlea, Tinnitus, Genetics",
      "subfield": "neuroscience"
    }
  ],
  "title": "Cochlear size variation in a large-scale international multicentre cohort",
  "title_text": "Cochlear size variation in a large-scale international multicentre cohort",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:17:59Z",
  "url": "https://research.draconitic.com/paper/6cc878hpmfc0m",
  "venue": "Hearing Research",
  "versions": []
}