Tympanic Membrane Image Classification for Otitis Media Diagnosis

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Solution Overview

Problem

Current methods for diagnosing otitis media, particularly distinguishing between acute otitis media (AOM), otitis media with effusion (OME), and no effusion (NOE), are unreliable, leading to over- and under-prescription of antibiotics, increased costs, and potential complications due to the difficulty in visual examination and classification of tympanic membrane images.

Innovation Solution

A diagnostic system and method that classify tympanic membrane images using a set of extracted features such as concavity, translucency, amber level, grayscale variance, bubble presence, and light features, processed by a computing device to accurately differentiate between AOM, OME, and NOE, reducing the need for expert interpretation and minimizing misdiagnosis.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If visual examination of the tympanic membrane is performed by non-expert otoscopists, then the diagnostic process is simple and quick, but the diagnostic accuracy is low leading to misdiagnosis

Engineering Contradiction:
Improvesimplicity of diagnostic processVSAvoiddiagnostic accuracy
Core Design Contradiction:
Ease of operationVSMeasurement precision

Solution Approach 1:

The patent introduces an automated classification system that acts as an intermediary between the otoscope image capture and the final diagnosis. The system processes images through multiple classification stages (first classifier for AOM/NOE/OME, second classifier for AOM severity) to provide objective diagnostic assistance, thereby improving accuracy while maintaining ease of use for non-expert otoscopists

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent replaces the subjective mechanical visual examination process with an automated digital image classification system. The system uses computer-aided classification algorithms to objectively analyze tympanic membrane images, substituting human expert judgment with automated processing while preserving the simplicity of the overall diagnostic workflow

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Reliability

If antibiotics are prescribed for uncertain cases to avoid under-treatment, then patient outcomes are protected, but antibiotic over-prescription occurs leading to resistance

Engineering Contradiction:
Improvepatient outcome protectionVSAvoidantibiotic resistance
Core Design Contradiction:
ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The patent implements a feedback mechanism where the automated classification system provides diagnostic confidence indicators and classification results to guide antibiotic prescribing decisions. The system analyzes image features and provides structured output that helps clinicians make evidence-based decisions about when antibiotics are truly necessary, reducing over-prescription while maintaining appropriate treatment coverage

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The patent changes the diagnostic parameters from subjective visual assessment to objective image-based measurements (color, texture, shape features). This parameter transformation enables more precise differentiation between AOM cases requiring antibiotics and OME/NOE cases where antibiotics are unnecessary, thereby reducing antibiotic resistance while protecting patient outcomes

Inventive Principle:
Principle #35Parameter changes

3Device complexity

If hand-held otoscopes are used for diagnosis, then the equipment is simple and portable, but image acquisition and recording capabilities are limited

Engineering Contradiction:
Improveequipment simplicityVSAvoidimage recording capability
Core Design Contradiction:
Device complexityVSLoss of information

Solution Approach 1:

The patent merges the simple hand-held otoscope with digital imaging and computer-aided classification capabilities. The system combines traditional otoscope functionality with image capture, processing, and automated classification in an integrated workflow, preserving portability and simplicity while adding valuable image recording and analysis capabilities

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The patent creates digital copies of the tympanic membrane images captured by the otoscope. These digital copies can be stored, analyzed by the classification system, and used for documentation and follow-up, thereby preserving diagnostic information without requiring complex equipment while enabling comprehensive image acquisition and recording

Inventive Principle:
Principle #26Copying

Data Source

PatentUS10182711B2Method and apparatus for aiding in the diagnosis of otitis media by classifying tympanic membrane images
Publication Date: 2019.01.22 CARNEGIE MELLON UNIV
  • US10182711B2 patent drawing
  • US10182711B2 patent drawing
  • US10182711B2 patent drawing

AI summary

A method of aiding the diagnosis of otitis media in a patient includes obtaining image data in a processor apparatus of a computing device, the image data being associated with at least one electronic image of a tympanic membrane of the patient, calculating, a plurality of image features, each image feature being calculated based on at least a portion of the image data, classifying the at least one electronic image as a particular type of otitis media using the plurality of image features, and outputting an indication of the particular type of otitis media. Also, a system for implementing such a method that includes an output device and a computing device.