Transtympanic Visualization of Cochlear Implant Placement With Optical Coherence Tomography: A Pilot Study

Wang, Junzhe1; Chawdhary, Gaurav2; Farrell, Joshua1; Yang, Xiaojie1,3; Farrell, Matthew4; MacDougall, Dan4; Trudel, Mathieu5; Shoman, Nael6; Morris, David P.7; Adamson, Robert B. A.1,7,8

2022-09-01

10.1097/MAO.0000000000003635

OTOLOGY & NEUROTOLOGY   Impact Factor & Quartile

1531-7129

1537-4505

Objective 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. Patient 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. Intervention A custom-built swept source ME-OCT system (lambda(o) = 1550 nm, increment lambda = 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. Main Outcome Measure 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. Results 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. Conclusions 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.

Cochlear implant Noninvasive imaging Nonradiation imaging Optical coherence tomography Point-of-care Postsurgical monitoring

SCI

English

Non-SUSTech

MITACS[IT14716]

Neurosciences & Neurology ; Otorhinolaryngology

Clinical Neurology ; Otorhinolaryngology

WOS:000840798300006

LIPPINCOTT WILLIAMS & WILKINS

CLINICAL MEDICINE

Web of Science

1.Dalhousie Univ, Sch Biomed Engn, 5981 Univ Ave,POB 15000, Halifax, NS B3H 4R2, Canada
2.Royal Hallamshire Hosp, Dept Otolaryngol, Sheffield, S Yorkshire, England
3.Southern Univ Sci & Technol, Dept Biomed Engn, Shenzhen, Guangdong, Peoples R China
4.Audiopt Med Inc, Halifax, NS, Canada
5.CHU Quebec Univ Laval, Dept Otolaryngol Head & Neck Surg, Quebec City, PQ, Canada
6.Dalhousie Univ, Dept Otolaryngol Head & Neck Surg, Halifax, NS, Canada
7.Dalhousie Univ, Dept Surg, Div Otolaryngol Head & Neck Surg, Halifax, NS, Canada
8.Dalhousie Univ, Elect & Comp Engn Dept, Halifax, NS, Canada

Wang, Junzhe,Chawdhary, Gaurav,Farrell, Joshua,et al. Transtympanic Visualization of Cochlear Implant Placement With Optical Coherence Tomography: A Pilot Study[J]. OTOLOGY & NEUROTOLOGY,2022,43(8).

Wang, Junzhe.,Chawdhary, Gaurav.,Farrell, Joshua.,Yang, Xiaojie.,Farrell, Matthew.,...&Adamson, Robert B. A..(2022).Transtympanic Visualization of Cochlear Implant Placement With Optical Coherence Tomography: A Pilot Study.OTOLOGY & NEUROTOLOGY,43(8).

Wang, Junzhe,et al."Transtympanic Visualization of Cochlear Implant Placement With Optical Coherence Tomography: A Pilot Study".OTOLOGY & NEUROTOLOGY 43.8(2022).