CONCLUSION: With optical coherence tomography (OCT) it is basically possible to reveal parts of the cochlear morphology without opening its enveloping membranes. Thus, it may serve as a helpful guide for the surgeon to localize the scala tympani precisely before opening the fluid-filled inner ear to insert the electrode array. OBJECTIVE: To improve anatomical orientation in cochlear implant surgery before definitively opening the fluid-filled inner ear. The question was whether a new imaging technique, OCT, might provide information about the site of the underlying inner ear structures (scala tympani, scala vestibuli) and could, consequently, guide the surgeon towards the scala tympani. MATERIALS AND METHODS: In a preliminary study, OCT was carried out on human temporal bone preparations, in which a cochleostomy ('fenestration') was performed leaving the endosteum and the fluid-filled inner ear intact. OCT was applied via a prototype of a specially equipped operating microscope. The mode of OCT used in this context was spectral-domain (SD)-OCT. RESULTS: On scans, which can be read analogous to B-mode sonography, OCT provides information about structures on the inner surface of the partly exposed but still intact membranous cochlear lining - such as scala tympani or scala vestibuli.
CONCLUSION: With optical coherence tomography (OCT) it is basically possible to reveal parts of the cochlear morphology without opening its enveloping membranes. Thus, it may serve as a helpful guide for the surgeon to localize the scala tympani precisely before opening the fluid-filled inner ear to insert the electrode array. OBJECTIVE: To improve anatomical orientation in cochlear implant surgery before definitively opening the fluid-filled inner ear. The question was whether a new imaging technique, OCT, might provide information about the site of the underlying inner ear structures (scala tympani, scala vestibuli) and could, consequently, guide the surgeon towards the scala tympani. MATERIALS AND METHODS: In a preliminary study, OCT was carried out on human temporal bone preparations, in which a cochleostomy ('fenestration') was performed leaving the endosteum and the fluid-filled inner ear intact. OCT was applied via a prototype of a specially equipped operating microscope. The mode of OCT used in this context was spectral-domain (SD)-OCT. RESULTS: On scans, which can be read analogous to B-mode sonography, OCT provides information about structures on the inner surface of the partly exposed but still intact membranous cochlear lining - such as scala tympani or scala vestibuli.
Authors: Michelle L Gabriele; Gadi Wollstein; Hiroshi Ishikawa; Juan Xu; Jongsick Kim; Larry Kagemann; Lindsey S Folio; Joel S Schuman Journal: Prog Retin Eye Res Date: 2010-06-11 Impact factor: 21.198
Authors: Hamid R Djalilian; James Ridgway; Majestic Tam; Ali Sepehr; Zhongping Chen; Brian J F Wong Journal: Otol Neurotol Date: 2008-12 Impact factor: 2.311
Authors: László Tóth; Attila Vajas; Péter Csomor; András Berta; István Sziklai; Tamás Karosi Journal: Eur Arch Otorhinolaryngol Date: 2012-05-13 Impact factor: 2.503
Authors: Saleh Mohebbi; Jakob Lexow; Alexander Fuchs; Thomas Rau; Sebastian Tauscher; Marjan Mirsalehi; Seyed Mousa Sadr Hosseini; Tobias Ortmaier; Thomas Lenarz; Omid Majdani Journal: Iran J Otorhinolaryngol Date: 2018-11