| Autor: |
Junzhe Wang, Gaurav Chawdhary, Joshua Farrell, Xiaojie Yang, Matthew Farrell, Dan MacDougall, Mathieu Trudel, Nael Shoman, David P. Morris, Robert B. A. Adamson |
| Rok vydání: |
2022 |
| Předmět: |
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| Zdroj: |
Otologyneurotology : official publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology. 43(8) |
| ISSN: |
1537-4505 |
| Popis: |
This study aimed to evaluate the ability of transtympanic middle ear optical coherence tomography (ME-OCT) to assess placement of cochlear implants (CIs) in situ.A 72-year-old man with bilateral progressive heredodegenerative sensorineural hearing loss due to work-related noise exposure received a CI with a slim modiolar electrode for his right ear 3 months before his scheduled checkup.A custom-built swept source ME-OCT system (λo = 1550 nm, ∆λ = 40 nm) designed for transtympanic middle ear imaging was used to capture a series of two- and three-dimensional images of the patient's CI in situ. Separately, transtympanic OCT two-dimensional video imaging and three-dimensional imaging were used to visualize insertion and removal of a CI with a slim modiolar electrode in a human cadaveric temporal bone through a posterior tympanotomy.Images and video were analyzed qualitatively to determine the visibility of implant features under ME-OCT imaging and quantitatively to determine insertion depth of the CI.After implantation, the CI electrode could be readily visualized in the round window niche under transtympanic ME-OCT in both the patient and the temporal bone. In both cases, characteristic design features of the slim modiolar electrode allowed us to quantify the insertion depth from our images.ME-OCT could potentially be used in a clinic as a noninvasive, nonionizing means to confirm implant placement. This study shows that features of the CI electrode visible under ME-OCT can be used to quantify insertion depth in the postoperative ear. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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