Measurement of stapes footplate thickness in otosclerosis by ultra-high-resolution computed tomography
| Autor: | Shunsuke Kondo, Teruyuki Higa, Tsuneo Yamashiro, Yukinori Akazawa, Mikio Suzuki, Akira Ganaha, Hitoshi Hirakawa, Yoshiki Oyakawa |
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| Rok vydání: | 2020 |
| Předmět: |
Adult
Male Materials science Computed tomography Stapes Surgery 03 medical and health sciences 0302 clinical medicine medicine Humans Oval Window Ear 030223 otorhinolaryngology Image resolution Aged Retrospective Studies Stapes Observer Variation medicine.diagnostic_test Temporal Bone General Medicine Middle Aged medicine.disease Ultra high resolution Footplate Ossicular Prosthesis Otosclerosis ROC Curve Otorhinolaryngology Case-Control Studies 030220 oncology & carcinogenesis Female Tomography X-Ray Computed Biomedical engineering |
| Zdroj: | Acta Oto-Laryngologica. 140:899-903 |
| ISSN: | 1651-2251 0001-6489 |
| DOI: | 10.1080/00016489.2020.1788225 |
| Popis: | 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.We examined stapes footplate thickness using U-HRCT in relation to stapedotomy to predict the difficulty of the surgical procedure.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.Footplate thickness was smaller at the midpoint than just before the anterior crus and just after 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;Footplate thickness on U-HRCT correlated with temporal bone anatomy and corresponded to surgical difficulty. |
| Databáze: | OpenAIRE |
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