The Complete and Two-Turn Cochlear Duct Length Among Filipinos

Philippine Journal of Otolaryngology Head and Neck Surgery Pub Date : 2022-11-15 DOI:10.32412/pjohns.v37i2.2027

Raiza Michaella Kasilag, MD, Kathrina Aquino-Diaz

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Abstract

ABSTRACTObjective: This study aims to measure the complete and two-turn cochlear duct lengths in a Filipino population using archived CT scan images. Methods: Design: Retrospective Review of Records Setting:Tertiary Government Training Hospital Participants: CT Scan Images of 255 patients Cochlear images of patients who underwent cranial, facial, orbital, paranasal sinus and temporal bone CT scans from January 2019 to December 2019 were analyzed. Coronal oblique images from 3D multiplanar reconstructions were obtained and a single linear measurement (‘A’ value) was used as the spiral coefficient to calculate the complete cochlear duct length (CDL) and two- turn length (2TL). Results: A total of 510 cochlear images were obtained from the CT scan images of 255 subjects (143 males, 112 females aged 1 to 81 years; mean age = 47 years). The mean ‘A’ value was 8.81 mm (SD = 0.20). The mean complete cochlear duct length was 32.68 mm (31.01 mm – 35.50 mm; SD = 0.834) while the mean two-turn cochlear duct length was 29.61 mm (28.14 mm – 32.08 mm; SD = 0.732). The complete and two-turn cochlear duct lengths in males were found to be significantly longer than in females (p = .001). No significant difference was found between cochlear measurements for left and right ears. Conclusion: The mean complete cochlear duct length among Filipinos in our study measures 32.68 mm while the mean two-turn cochlear duct length measures 29.61mm. Both complete and two-turn cochlear duct lengths were longer among Filipino males than among females.

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菲律宾人完整和两圈耳蜗管长度

摘要目的：本研究旨在利用存档的CT扫描图像测量菲律宾人群的完整和两匝耳蜗管长度。方法：设计：记录设置的回顾性审查：三级政府培训医院参与者：255名患者的CT扫描图像分析2019年1月至2019年12月接受颅骨、面部、眼眶、鼻窦和颞骨CT扫描的患者的耳蜗图像。从三维多平面重建中获得冠状倾斜图像，并使用单个线性测量值（a值）作为螺旋系数来计算完整耳蜗管长度（CDL）和两匝长度（2TL）。结果：255名受试者（143名男性，112名女性，年龄1至81岁；平均年龄=47岁）的CT扫描图像共获得510张耳蜗图像。平均“A”值为8.81 mm（SD=0.20）。平均完整耳蜗管长度为32.68 mm（31.01 mm–35.50 mm；SD=0.834左耳和右耳的耳蜗测量。结论：在我们的研究中，菲律宾人的平均完整耳蜗管长度为32.68mm，而平均两匝耳蜗管长度则为29.61mm。菲律宾男性的完整耳蜗管和两匝耳蜗管长均长于女性。

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来源期刊

Philippine Journal of Otolaryngology Head and Neck Surgery

自引率

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审稿时长

48 weeks