Texture Analysis of CT Images for Vascular Segmentation: A Revised Run Length Approach

  • Barbara Podda
  • Andrea Giachetti
Part of the Lecture Notes in Computer Science book series (LNCS, volume 3617)

Abstract

In this paper we present a textural feature analysis applied to a medical image segmentation problem where other methods fail, i.e. the localization of thrombotic tissue in the aorta. This problem is extremely relevant because many clinical applications are being developed for the computer assisted, image driven planning of vascular intervention, but standard segmentation techniques based on edges or gray level thresholding are not able to differentiate thrombus from surrounding tissues like vena, pancreas having similar HU average and noisy patterns [3,4]. Our work consisted in a deep analysis of the texture segmentation approaches used for CT scans, and on experimental tests performed to find out textural features that better discriminate between thrombus and other tissues. Found that some Run Length codes perform well both in literature and experiments, we tried to understand the reason of their success suggesting a revision of this approach with feature selection and the use of specifically thresholded Run Lengths that improves the discriminative power of measures reducing the computational cost.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2005

Authors and Affiliations

  • Barbara Podda
    • 3
  • Andrea Giachetti
    • 1
    • 2
  1. 1.Dip. Matematica e InformaticaUniversitá di CagliariCagliari
  2. 2.CRS4 – POLARISPulaItaly
  3. 3.DIEEUniversitá di CagliariCagliari

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