Building and Testing a Statistical Shape Model of the Human Ear Canal [PDF]
, 2002 . Today the design of custom in-the-ear hearing aids is based on personal experience and skills and not on a systematic description of the variation of the shape of the ear canal. In this paper it is described how a dense surface point distribution model
C. Lorenz +14 more
core +3 more sources
In vivo investigation of ear canal pulse oximetry during hypothermia [PDF]
, 2017 Pulse oximeters rely on the technique of photoplethysmography (PPG) to estimate arterial oxygen saturation (SpO(Formula presented.)). In conditions of poor peripheral perfusion such as hypotension, hypothermia, and vasoconstriction, the PPG signals ...
AA Awad +17 more
core +1 more source
Otolaryngology Case Reports, 2021 Acquired ear canal stenosis can be caused by trauma, inflammation, postoperative scar formation, or tumors. There is a risk of cholesteatoma formation because of keratinized deposits in the closed space, with a reduction in quality of life because of ...
Ryota Tomioka +4 more
doaj
Investigation of photoplethysmography and arterial blood oxygen saturation from the ear-canal and the finger under conditions of artificially induced hypothermia [PDF]
, 2015 Pulse oximeters relay on the technique of photoplethysmography (PPG) to estimate arterial oxygen saturation (SpO2). In conditions of poor peripheral perfusion such as hypotension, hypothermia, and vasoconstriction, pulse oximeters become inaccurate or ...
Budidha, K., Kyriacou, P. A.
core +1 more source
Pleomorphic adenoma presenting with conductive hearing loss in the ear canal: a case report and review of the literature [PDF]
, 2014 INTRODUCTION: Pleomorphic adenoma accounts for 65 percent of all salivary gland tumors. It has been identified in several anatomical regions, but pleomorphic adenoma arising in the ear canal, first described in 1951, is extremely rare. CASE PRESENTATION:
Ayako Maruyama +2 more
core +2 more sources
Asymmetrically severe internal auditory canal hypoplasia: A case report. [PDF]
, 2020 We present a case of an otherwise healthy 20-month-old with congenital sensorineural hearing loss. CT and MR imaging demonstrated bilateral asymmetrically severe hypoplasia of the internal auditory canals and vestibulocochlear nerves.
Djalilian, Hamid R +6 more
core +1 more source
First Branchial Cleft Fistula Associated with External Auditory Canal Stenosis and Middle Ear Cholesteatoma [PDF]
Iranian Journal of Otorhinolaryngology, 2014 Introduction: First branchial cleft anomalies manifest with duplication of the external auditory canal. Case Report: This report features a rare case of microtia and congenital middle ear and canal cholesteatoma with first branchial fistula.
shahin abdollahi fakhim +2 more
doaj +2 more sources
Innervation of the Human Cavum Conchae and Auditory Canal: Anatomical Basis for Transcutaneous Auricular Nerve Stimulation [PDF]
, 2017 The innocuous transcutaneous stimulation of nerves supplying the outer ear has been demonstrated to be as effective as the invasive direct stimulation of the vagus nerve for the treatment of some neurological and nonneurological disturbances.
Bermejo, P. +6 more
core +10 more sources
Labyrinthine artery aneurysm as an internal auditory canal mass. [PDF]
, 2014 We present the first case report of a labyrinthine artery aneurysm masquerading as an internal auditory canal tumor. A 72-year-old woman presented with sudden onset right facial paralysis, facial pain, hearing loss, and vertigo.
Brunberg, James +2 more
core +1 more source
In-ear photoplethysmography for central pulse waveform analysis in non-invasive hemodynamic monitoring [PDF]
, 2017 In recent years, the analysis of the photoplethys-mographic (PPG) pulse waveforms has attracted much research focus. However, the considered signals are primarily recorded at the fingertips, which suffer from reduced peripheral perfusion in situations ...
Feldheiser, Aarne +6 more
core +1 more source