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Applied Intelligence

, Volume 27, Issue 3, pp 193–203 | Cite as

A genetically optimized level set approach to segmentation of thyroid ultrasound images

  • Dimitris K. IakovidisEmail author
  • Michalis A. Savelonas
  • Stavros A. Karkanis
  • Dimitris E. Maroulis
Article

Abstract

This paper presents a novel framework for thyroid ultrasound image segmentation that aims to accurately delineate thyroid nodules. This framework, named GA-VBAC incorporates a level set approach named Variable Background Active Contour model (VBAC) that utilizes variable background regions, to reduce the effects of the intensity inhomogeneity in the thyroid ultrasound images. Moreover, a parameter tuning mechanism based on Genetic Algorithms (GA) has been considered to search for the optimal VBAC parameters automatically, without requiring technical skills. Experiments were conducted over a range of ultrasound images displaying thyroid nodules. The results show that the proposed GA-VBAC framework provides an efficient, effective and highly objective system for the delineation of thyroid nodules.

Keywords

Level sets Active contour models Genetic algorithms Segmentation Thyroid Ultrasound 

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Copyright information

© Springer Science+Business Media, LLC 2007

Authors and Affiliations

  • Dimitris K. Iakovidis
    • 1
    Email author
  • Michalis A. Savelonas
    • 1
  • Stavros A. Karkanis
    • 2
  • Dimitris E. Maroulis
    • 1
  1. 1.Dept. of Informatics and TelecommunicationsUniversity of AthensAthensGreece
  2. 2.Dept. of Informatics and Computer TechnologyTechnological Educational Institute of LamiaLamiaGreece

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