Soft-computing based diagnostic tool for analyzing demyelination in magnetic resonance images

  • Authors:
  • Shashi B. Mehta;Santanu Chaudhury;A. Bhattacharyya;A. Jena

  • Affiliations:
  • Philips Innovation Campus, Manyata Tech Park, Nagavara, Bangalore 560045, India and Delhi College of Engineering Bawana Road, Delhi 110042, India;Indian Institute of Technology Hauz Khas, Delhi 110016, India;Delhi College of Engineering Bawana Road, Delhi 110042, India;MRI Center, Rajiv Gandhi Cancer Institute & Research Center, Rohini, Delhi 110085, India

  • Venue:
  • Applied Soft Computing
  • Year:
  • 2010

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Abstract

This paper proposes a soft-computing based diagnostic tool for analyzing (white matter changes) demyelination due to radiation therapy given to brain tumor cases. The tool exploits the pattern of changes in gray level distribution using a temporal sequence of magnetic resonance (MR) images. Appearance of white matter changes due to demyelination varies from patient to patient. Further, there exists inherent impreciseness in the white matter change patterns. These characteristics make use of fuzzy features well suited for describing image based temporal patterns. Correlation between these temporal patterns and actual onset of demyelination can be captured by fuzzy rules because of the inherent uncertainty associated with changes in gray level pattern in the image and occurrence of the disease. The tool is based on hybrid approach of two popular approaches of genetic algorithm based machine learning (GBML) techniques namely Michigan and Pittsburgh approach. The genetic algorithm (GA) based machine learning tool generates an optimized rule set to indicate positive (P), negative (N) or doubtful (D) cases of demyelination.