Measurement of stapes footplate thickness in otosclerosis using ultra-high-resolution computed tomography

• Material Type: 博士論文
• ISSN: 1651-2251
• Title: Measurement of stapes footplate thickness in otosclerosis using ultra-high-resolution computed tomography
• Volume: 140 11
• Author/Editor: 赤澤, 幸則
• Author Heading: 赤澤, 幸則
• Publication, Distribution, etc.: 琉球大学
• Publication Date: 2020-12-18
• Publication Date (W3CDTF): 2020-12-18
• Alternative Title: 超高精細CTを用いた耳硬化症のアブミ骨底板の測定
• Periodical title: Acta Oto-Laryngologica
• Degree grantor/type: 琉球大学
• Date Granted: 2020-12-18
• Date Granted (W3CDTF): 2020-12-18
• Dissertation Number: 甲第516号
• Degree Type: 博士(医学)
• Conferring No. (Dissertation): 甲第516号
• Text Language Code: eng
• Alias of Author: Akazawa, Yukinori
• Subject Heading: Otosclerosis; stapes footplate thickness; ultra-high-resolution computed tomography
• Target Audience: 一般
• Note (General): Background: Ultra-high-resolution computed tomography (U-HRCT) utilizes a 1024 × 1024 matrix with 0.25-mm section thickness, offering better spatial resolution than conventional multi-detector row CT to detect anatomic data for otologic surgery.Aims: We examined stapes footplate thickness using U-HRCT in relation to stapedotomy to predict the difficulty of the surgical procedure.Materials and methods: Subjects were 12 otosclerosis patients and 25 controls who underwent diagnostic U-HRCT. A profile curve (Hounsfield units) was used to measure stapes footplate thickness along a perpendicular line across the stapes footplate in a plane parallel to the lateral semicircular canal.Results: Footplate thickness was smaller at the midpoint than just before the anterior crus and justafter the posterior crus. Interobserver variability was lowest at the midpoint, where foot plate thickness was significantly greater in the affected ear in otosclerosis patients compared with controls (0.60 ± 0.09 mm vs 0.46 ± 0.04 mm; p < .001). Otosclerosis patients were detected using U-HRCT with a high area under the curve. Difficulty in the stapes opening procedure correlated with stapes footplate thickness.Conclusions: Footplate thickness on U-HRCT correlated with temporal bone anatomy and corresponded to surgical difficulty.Significance: U-HRCT-derived anatomic data is useful for evaluating the stapes.
• Persistent ID (NDL): info:ndljp/pid/12314039; https://dl.ndl.go.jp/pid/12314039
• Collection: 障害者向け資料
• Collection (Materials For Handicapped People:1): テキストデータ
• Collection (particular): 国立国会図書館デジタルコレクション > デジタル化資料 > 博士論文; https://dl.ndl.go.jp/collections/A00014
• Acquisition Basis: 博士論文（自動収集）
• Date Accepted (W3CDTF): 2022-08-08T06:02:54+09:00
• Format (IMT): application/pdf
• Access Restrictions: 国立国会図書館内限定公開
• Service for the Digitized Contents Transmission Service: 図書館・個人送信対象外
• Availability of remote photoduplication service: 可
• Periodical Title (URI): http://hdl.handle.net/20.500.12000/0002018007; https://u-ryukyu.repo.nii.ac.jp/records/2018007
• Data Provider (Database): 国立国会図書館 : 国立国会図書館デジタルコレクション; https://dl.ndl.go.jp

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