{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,8,29]],"date-time":"2025-08-29T05:10:29Z","timestamp":1756444229381,"version":"3.44.0"},"reference-count":22,"publisher":"Wiley","issue":"4","license":[{"start":{"date-parts":[[2025,8,27]],"date-time":"2025-08-27T00:00:00Z","timestamp":1756252800000},"content-version":"vor","delay-in-days":26,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Laryngoscope Investig Oto"],"published-print":{"date-parts":[[2025,8]]},"abstract":"<jats:title>ABSTRACT<\/jats:title><jats:sec><jats:title>Objective<\/jats:title><jats:p>To clinically validate manual measurement of cochlear length from pre\u2010operative image of cochlea with post\u2010operative image of cochlear implant (CI) electrode.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Temporal bone computer tomography (CT) scans of 23 ears were available for this pilot study. The inner ear was three\u2010dimensionally (3D) segmented, and cochlea length was manually measured for preferred angular depth depending on inner ear anatomical types for CI electrode length selection. Post\u2010operative CT scans were made available for electrode reconstruction to measure electrode length inside the cochlea to validate pre\u2010operative measurement of cochlear length.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Normal anatomy (NA) inner ear was identified in 11 ears, enlarged vestibular aqueduct syndrome (EVAS) in 4 ears, incomplete partition (IP) type I in 2 ears, cochlear hypoplasia (CH) in 5 ears, and otosclerosis in 1 ear. Cochlear length was measured for 650\u00b0 of angular depth in NA ears, 540\u00b0 in EVAS and otosclerosis, 360\u00b0 in IP type I, and for available angular depth depending on the development of the cochlea in CH type. Based on the cochlea length measured, a closely matching electrode length was chosen for implantation from 1 CI manufacturer. Partial insertion was seen in 2 NA ears, 1 otosclerosis ear, and 1 CH ear, whereas full insertion of the chosen electrode was achieved in the remaining 19 ears.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>Manual measurement of cochlea length from 3D image of cochlea is a practical way of choosing electrode length for preferred angular insertion depth depending on the cochlea anatomy.<\/jats:p><\/jats:sec><jats:sec><jats:title>Level of Evidence<\/jats:title><jats:p>Between level 2 and 3.<\/jats:p><\/jats:sec>","DOI":"10.1002\/lio2.70237","type":"journal-article","created":{"date-parts":[[2025,8,27]],"date-time":"2025-08-27T11:25:21Z","timestamp":1756293921000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Clinical Validation of Manual Measurement of Cochlea Length With Post\u2010Operative Electrode Insertion Depth: A Pilot Study"],"prefix":"10.1002","volume":"10","author":[{"given":"Fei","family":"Wang","sequence":"first","affiliation":[{"name":"Department of Otorhinolaryngology The First Hospital of China Medical University  Shenyang Liaoning China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Dharmikkumar","family":"Anaghan","sequence":"additional","affiliation":[{"name":"Research and Development Department MED\u2010EL Headquarters  Innsbruck Austria"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2116-9318","authenticated-orcid":false,"given":"Anandhan","family":"Dhanasingh","sequence":"additional","affiliation":[{"name":"Research and Development Department MED\u2010EL Headquarters  Innsbruck Austria"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Lian","family":"Hui","sequence":"additional","affiliation":[{"name":"Department of Otorhinolaryngology The First Hospital of China Medical University  Shenyang Liaoning China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2025,8,27]]},"reference":[{"key":"e_1_2_9_2_1","unstructured":"https:\/\/www.who.int\/news\u2010room\/fact\u2010sheets\/detail\/deafness\u2010and\u2010hearing\u2010loss."},{"key":"e_1_2_9_3_1","doi-asserted-by":"publisher","DOI":"10.3390\/life14010012"},{"key":"e_1_2_9_4_1","doi-asserted-by":"publisher","DOI":"10.1080\/00016489.2021.1888504"},{"key":"e_1_2_9_5_1","doi-asserted-by":"publisher","DOI":"10.3389\/fneur.2024.1348439"},{"key":"e_1_2_9_6_1","doi-asserted-by":"publisher","DOI":"10.1055\/s\u20100038\u20101661360"},{"key":"e_1_2_9_7_1","doi-asserted-by":"publisher","DOI":"10.1097\/ONO.0000000000000045"},{"key":"e_1_2_9_8_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.wjorl.2018.12.002"},{"key":"e_1_2_9_9_1","doi-asserted-by":"publisher","DOI":"10.1097\/MAO.0000000000001329"},{"key":"e_1_2_9_10_1","doi-asserted-by":"publisher","DOI":"10.1186\/s40463\u2010017\u20100194\u20102"},{"key":"e_1_2_9_11_1","doi-asserted-by":"publisher","DOI":"10.1159\/000095611"},{"key":"e_1_2_9_12_1","doi-asserted-by":"publisher","DOI":"10.1097\/MAO.0000000000000620"},{"key":"e_1_2_9_13_1","doi-asserted-by":"publisher","DOI":"10.1177\/2473974X18800238"},{"key":"e_1_2_9_14_1","doi-asserted-by":"publisher","DOI":"10.1109\/TBME.2021.3080116"},{"key":"e_1_2_9_15_1","doi-asserted-by":"publisher","DOI":"10.4274\/balkanmedj.2017.0367"},{"key":"e_1_2_9_16_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41598\u2010021\u201086741\u2010x"},{"key":"e_1_2_9_17_1","doi-asserted-by":"publisher","DOI":"10.5152\/iao.2019.6246"},{"key":"e_1_2_9_18_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41598\u2010020\u201062653\u20100"},{"key":"e_1_2_9_19_1","doi-asserted-by":"publisher","DOI":"10.1080\/14670100.2019.1694226"},{"key":"e_1_2_9_20_1","doi-asserted-by":"publisher","DOI":"10.1002\/lio2.936"},{"key":"e_1_2_9_21_1","doi-asserted-by":"publisher","DOI":"10.3389\/fnins.2019.01312"},{"key":"e_1_2_9_22_1","doi-asserted-by":"publisher","DOI":"10.1146\/annurev\u2010psych\u2010122216\u2010011635"},{"key":"e_1_2_9_23_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41598\u2010022\u201023911\u20105"}],"container-title":["Laryngoscope Investigative Otolaryngology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/lio2.70237","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,8,29]],"date-time":"2025-08-29T04:45:16Z","timestamp":1756442716000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1002\/lio2.70237"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2025,8]]},"references-count":22,"journal-issue":{"issue":"4","published-print":{"date-parts":[[2025,8]]}},"alternative-id":["10.1002\/lio2.70237"],"URL":"https:\/\/doi.org\/10.1002\/lio2.70237","archive":["Portico"],"relation":{},"ISSN":["2378-8038","2378-8038"],"issn-type":[{"type":"print","value":"2378-8038"},{"type":"electronic","value":"2378-8038"}],"subject":[],"published":{"date-parts":[[2025,8]]},"assertion":[{"value":"2025-05-05","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2025-08-06","order":2,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2025-08-27","order":3,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}],"article-number":"e70237"}}