Multimodal medical case retrieval using Bayesian networks and the Dezert-Smarandache theory - Inserm - Institut national de la santé et de la recherche médicale Access content directly
Journal Articles 5th IEEE International Symposium on Biomedical Imaging: From Nano to Macro Year : 2008

Multimodal medical case retrieval using Bayesian networks and the Dezert-Smarandache theory

Abstract

Most medical images are now digitized and stored with semantic information, leading to medical case databases. They may be used for aid to diagnosis, by retrieving similar cases to those in examination. But the information are often incomplete, uncertain and sometimes conflicting, so difficult to use. In this paper, we present a Case Based Reasoning (CBR) system for medical case retrieval, derived from the Dezert-Smarandache theory, which is well suited to handle those problems. We introduce a case retrieval specific frame of discernment theta, which associates each element of theta with a case in the database; we take advantage of the flexibility offered by the DSmT's hybrid models to finely model the database. The system is designed so that heterogeneous sources of information can be integrated in the system: in particular images, indexed by their digital content, and symbolic information. The method is evaluated on two classified databases: one for diabetic retinopathy follow-up (DRD) and one for screening mammography (DDSM). On these databases, results are promising: the retrieval precision at five reaches 81.8% on DRD and 84.8% on DDSM.
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Dates and versions

inserm-00331189 , version 1 (15-10-2008)

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Gwénolé Quellec, Mathieu Lamard, Lynda Bekri, Guy Cazuguel, Christian Roux, et al.. Multimodal medical case retrieval using Bayesian networks and the Dezert-Smarandache theory. 5th IEEE International Symposium on Biomedical Imaging: From Nano to Macro, 2008, 14-17, pp.245-248. ⟨10.1109/ISBI.2008.4540978⟩. ⟨inserm-00331189⟩
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