Supporting content-based image retrieval and computer-aided diagnosis systems with association rule-based techniques

Authors:
Marcela X. Ribeiro;Pedro H. Bugatti;Caetano Traina, Jr.;Paulo M. A. Marques;Natalia A. Rosa;Agma J. M. Traina
Affiliations:
Department of Computer Science, University of São Paulo at São Carlos, Brazil;Department of Computer Science, University of São Paulo at São Carlos, Brazil;Department of Computer Science, University of São Paulo at São Carlos, Brazil;School of Medicine of University of São Paulo at Ribeirão Preto, Brazil;School of Medicine of University of São Paulo at Ribeirão Preto, Brazil;Department of Computer Science, University of São Paulo at São Carlos, Brazil
Venue:
Data & Knowledge Engineering
Year:
2009

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Abstract

In this work, we take advantage of association rule mining to support two types of medical systems: the Content-based Image Retrieval (CBIR) systems and the Computer-Aided Diagnosis (CAD) systems. For content-based retrieval, association rules are employed to reduce the dimensionality of the feature vectors that represent the images and to improve the precision of the similarity queries. We refer to the association rule-based method to improve CBIR systems proposed here as Feature selection through Association Rules (FAR). To improve CAD systems, we propose the Image Diagnosis Enhancement through Association rules (IDEA) method. Association rules are employed to suggest a second opinion to the radiologist or a preliminary diagnosis of a new image. A second opinion automatically obtained can either accelerate the process of diagnosing or to strengthen a hypothesis, increasing the probability of a prescribed treatment be successful. Two new algorithms are proposed to support the IDEA method: to pre-process low-level features and to propose a preliminary diagnosis based on association rules. We performed several experiments to validate the proposed methods. The results indicate that association rules can be successfully applied to improve CBIR and CAD systems, empowering the arsenal of techniques to support medical image analysis in medical systems.