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Volume 33, Issue 6, Pages 442-460 (September 2009)


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Dialectical multispectral classification of diffusion-weighted magnetic resonance images as an alternative to apparent diffusion coefficients maps to perform anatomical analysis

W.P. SantosabCorresponding Author Informationemail address, F.M. Assisb, R.E. Souzac, P.B. Santos Filhod, F.B. Lima Netoa

Received 17 August 2008; accepted 7 April 2009.

Abstract 

Multispectral image analysis is a relatively promising field of research with applications in several areas, such as medical imaging and satellite monitoring. A considerable number of current methods of analysis are based on parametric statistics. Alternatively, some methods in computational intelligence are inspired by biology and other sciences. Here we claim that philosophy can be also considered as a source of inspiration. This work proposes the objective dialectical method (ODM): a method for classification based on the philosophy of praxis. ODM is instrumental in assembling evolvable mathematical tools to analyze multispectral images. In the case study described in this paper, multispectral images are composed of diffusion-weighted (DW) magnetic resonance (MR) images. The results are compared to ground-truth images produced by polynomial networks using a morphological similarity index. The classification results are used to improve the usual analysis of the apparent diffusion coefficient map. Such results proved that gray and white matter can be distinguished in DW-MR multispectral analysis and, consequently, DW-MR images can also be used to furnish anatomical information.

a Universidade de Pernambuco, Escola Politécnica de Pernambuco, Madalena, Recife, PE, 50720-001, Brazil

b Universidade Federal de Campina Grande, Departamento de Engenharia Elétrica, Bodocongó, Campina Grande, PB, 58109-970, Brazil

c Universidade Federal de Pernambuco, Departamento de Física, Cidade Universitária, Recife, PE, 50670-901, Brazil

d North Carolina State University, Department of Physics, Raleigh, NC, USA

Corresponding Author InformationCorresponding author at: Universidade de Pernambuco, Escola Politécnica de Pernambuco, Rua Benfica, 88, Madalena, Recife, PE, 50720-001, Brazil. Tel.: +55 81 3462 5813.

PII: S0895-6111(09)00042-1

doi:10.1016/j.compmedimag.2009.04.004


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