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The 80 papers consider such topics as combining color constancy and gamma correction for image enhancement, haptic guidance using primitives for executing virtual robotic tasks, a neighborhood hybrid structure for optimizing mechanical properties of a microalloyed steel based on its chemical composition, the robust fractional digital control of a first-order plus integrator process, an experimental platform of a physical model for a quadrotor helicopter, a simulation model to solve the forward problem in acoustic reflectometry, and three basic geometries of rings containing microstrip antennas.
Exclusion criteria were the presence of a tympanic membrane perforation and/or a pressure equalization tube and a failure to undergo all testing, which included diagnostic audiometry (including tympanometry), pneumatic otoscopy, and acoustic reflectometry.
The device uses principles of acoustic reflectometry to classify patients into five categories of risk for middle ear effusion (table 1).
The results of acoustic reflectometry were compared with the diagnoses rendered by tympanometry.
The results of acoustic reflectometry obtained from randomly selected ears (1 ear in each patient) were analyzed in multiple subsets using the Wilcoxon matched-pairs signed rank test.
Acoustic reflectometry also correctly identified 76 of 81 ears as normal, for a specificity of 93.
Diagnostic tests include pneumatic otoscopy, audiometry (including tympanometry), and acoustic reflectometry.
an experimental device that led to the development of acoustic reflectometry, was introduced in the 1980s.
Acoustic reflectometry was introduced in 1984 as a method of improving the diagnosis of OME by measuring sound waves that bounce off tissue.
provided the acoustic reflectometry devices used in this study.
While EarCheck is for home use, it is based on the same patented and proven technology, acoustic reflectometry (or sound waves), used in doctor's offices since 1997 and included in the American Academy of Pediatrics' and American Academy of Family Physicians' Clinical Practice Guideline for the Diagnosis and Management of Acute Otitis Media (middle ear infection).
MDI Instruments was founded in 1994 to commercialize applications of patented acoustic reflectometry technology for detection of middle ear fluid (otitis media with effusion - OME) and ear infection (acute otitis media - AOM).