Radiographic Image Classification for Prosthetic Inflammation

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Solution Overview

Problem

Existing methods for analyzing medical images, particularly radiographic images, are inefficient in automatically identifying aseptic and septic inflammatory processes around prosthetic implants, leading to potential prosthesis removal if not promptly diagnosed.

Innovation Solution

An image classification method using a combination of segmentation, bicubic interpolation, cellular neural networks, and deep learning algorithms to automatically classify radiographic images into aseptic or septic conditions, with optional integration of haematochemical data for enhanced diagnosis.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If manual analysis of radiographic images is used to identify inflammatory processes, then diagnostic accuracy can be maintained, but analysis time and productivity are significantly reduced

Engineering Contradiction:
Improveimage analysis speedVSAvoiddiagnostic accuracy
Core Design Contradiction:
ProductivityVSMeasurement precision

Solution Approach 1:

The patent introduces an intermediary classification system that processes radiographic images through multiple stages: initial automated classification into broad categories, followed by selective deep analysis only for suspicious cases. This intermediary layer filters out clearly normal images, allowing manual reviewers to focus only on potentially problematic cases, thereby maintaining diagnostic accuracy while significantly improving overall productivity.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The image analysis process is segmented into distinct stages: preliminary automated screening, intermediate classification, and final expert review. Each stage handles specific types of analysis with appropriate complexity, preventing the need for full manual review of all images while ensuring that potentially critical cases receive thorough examination.

Inventive Principle:
Principle #1Segmentation

2Measurement precision

If comprehensive image processing algorithms are applied to all radiographic images, then classification accuracy is improved, but computational complexity and processing time increase

Engineering Contradiction:
Improveclassification accuracyVSAvoidprocessing system complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The system applies comprehensive processing algorithms selectively rather than universally. Full-complexity analysis is reserved only for images that pass through initial filtering stages and exhibit suspicious characteristics. The majority of clearly normal images receive simplified processing, reducing overall computational complexity while maintaining high classification accuracy for critical cases.

Inventive Principle:
Principle #16Partial or excessive action

3Productivity

If automated classification systems are implemented without integration of additional clinical data, then processing speed is maintained, but diagnostic reliability is reduced

Engineering Contradiction:
Improveprocessing speedVSAvoiddiagnostic reliability
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

The system merges radiographic image analysis with haematochemical data processing in an integrated diagnostic framework. Image classification results are combined with laboratory test results, clinical symptoms, and patient history to produce a comprehensive diagnostic assessment. This multi-source data integration enhances diagnostic reliability while maintaining processing efficiency through automated parallel processing of different data types.

Inventive Principle:
Principle #5Merging (Combining)

Data Source

PatentEP4264562B1Image classification method, in particular medical images, for example radiographic images
Publication Date: 2026.03.18 INOVA BIOMEDICAL TECH SRL
  • EP4264562B1 patent drawingFigure 1~3
  • EP4264562B1 patent drawingFigure 2
  • EP4264562B1 patent drawingFigure 4~5

AI summary

An image classification method, in particular medical images, for example radiographic images, wherein a sub-image RI which contains, for example, a Region Of Interest (ROI) in which a portion of limb and a prosthesis inserted into the same limb are visible is subjected to a classification process designed to define whether the sub-image RI belongs to a first class C1 of images with a respective first probability P1 or to a second class of images C2 with a respective probability P2.