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In Vivo Estimates of the Position of Advanced Bionics Electrode Arrays in the Human Cochlea
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Objectives: A new technique for determining the position of each electrode in the cochlea is described and applied to spiral computed tomography data from 15 patients implanted with Advanced Bionics HiFocus I, Ij, or Helix arrays.
Methods: ANALYZE imaging software was used to register 3-dimensional image volumes from patients' preoperative and postoperative scans and from a single body donor whose unimplanted ears were scanned clinically, with micro computed tomography and with orthogo...
Related newspaper, magazine, and journal articles from HighBeam Research
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In Vivo Estimates of the Position of Advanced Bionics Electrode Arrays in the Human Cochlea
The Annals of Otology, Rhinology & Laryngology
; ... place of peripheral stimulation is strongly reflected in activity maps of both the inferior colliculus37 and the auditory cortex.38 ... Computer-aided three-dimensional reconstruction in human cochlear maps: measurement of the lengths of organ of Corti. outer wall, inner ...
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Principles and outcome in perimodiolar positioning
The Annals of Otology, Rhinology & Laryngology
; ... Neck Surg 1989; 100:87-91. 7. Kawano A, Seldon HL, Clark GM. Computer-aided three-dimensional reconstruction in human cochlear maps: measurement of the lengths of organ of Corti, outer wall, inner wall, and Rosenthal's canal. Ann Otol Rhinol Laryngol 1996 ...
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New Clarion electrode with positioner: Insertion studies
The Annals of Otology, Rhinology & Laryngology
; A new straight thin electrode array (universal electrode) was designed to be used together with a positioner, which will place the electrode array at the medial wall (modiolus) of the cochlea. The study objectives were to demonstrate safety and ease of insertion, tissue trauma, electrode position,
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Grants put U. scientists closer to electrode 'miracle' zone
Deseret News (Salt Lake City)
; University of Utah bioengineering and medical researchers plan to use four grants totaling nearly $7 million to develop wireless electrodes that could help blind people "see," those who are paralyzed stand and perhaps even walk, and give new voice to those who have lost theirs. At the core of their
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U. team to assist in designing bionic arm
Deseret News (Salt Lake City)
; University of Utah researchers are among collaborators at numerous universities, hospitals and companies who will work together to develop an artificial arm that looks, feels and works like a natural arm -- controlled by thought and able to move naturally, clear to the fingertips, while sensing its
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Electrical impedance of the cochlear implant lubricants hyaluronic acid, oxycellulose, and glycerin
The Annals of Otology, Rhinology & Laryngology
; Hyaluronic acid (Healon), oxycellulose (hydroxypropyl methylcellulose), and glycerin are lubricants used in cochlear implant surgery for atraumatic deep insertion of the electrode array into the scala tympani. The electrical impedances of these three lubricants were measured to assess possible
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Novel intracochlear electrode positioner: Effects on electrode position
The Annals of Otology, Rhinology & Laryngology
; ... Am J Otol 1996; 17:859-65. 5. KawanoA, Seldon HL, Clark GM. Computer-aided three-dimensional reconstruction in human cochlear maps: measurements of the lengths of organ of Corti, outer wall, inner wall, and Rosenthal's canal. Ann Otol Rhinol Laryngol 1996 ...
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In vivo measures of cochlear length and insertions depth of nucleus cochlear implant electrode arrays
The Annals of Otology, Rhinology & Laryngology
; ... important steps toward the common goal of functional frequency maps. Advantages to their procedures are that the resolution of individual ... features that are important for developing patientspecific frequency maps. To locate each electrode in the spiral CT scan images still ...
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Prosthetic stimulation of the auditory system with intraneural electrodes
The Annals of Otology, Rhinology & Laryngology
; Prosthetic electrical stimulation of the auditory system is presently accomplished either via scala tympani electrode arrays or via cochlear nucleus surface electrode arrays. Many of the early cochlear implant studies, however, used electrode arrays placed within the auditory nerve itself - either
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Stainless steel conductivity sensors.(New Products)
Laboratory Equipment
; These stainless steel conductivity sensors are suited for boiler blowdown and other high-temperature conductivity applictions. Two models with 3/4 threaded bodies provide a choice of insertion depths for inline mounting. Model CS675HTTC has 1 insertion depth suited for mounting the sensor in a 3/4
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