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A competitive strategy for atrial and aortic tract segmentation based on deformable models.

Pedro Morais1, João L Vilaça2, Sandro Queirós3

  • 1Instituto de Ciência e Inovação em Engenharia Mecânica e Engenharia Industrial, Faculdade de Engenharia, Universidade do Porto, Porto, Portugal; ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal; Lab on Cardiovascular Imaging & Dynamics, Department of Cardiovascular Sciences, KULeuven - University of Leuven, Leuven, Belgium.

Medical Image Analysis
|August 7, 2017
PubMed
Summary

A novel competitive strategy accurately segments atrial and aortic regions, including challenging thin mid-walls. This method improves cardiac intervention planning by overcoming limitations of traditional segmentation techniques.

Keywords:
Atrial and aortic tract segmentationB-spline explicit active surfacesCompetitive contoursImage segmentation

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Area of Science:

  • Medical imaging analysis
  • Computational anatomy
  • Cardiovascular imaging

Background:

  • Existing atrial and aortic segmentation methods often struggle with thin mid-walls.
  • This limitation restricts their use in specific cardiac interventions.

Purpose of the Study:

  • Introduce a novel competitive strategy for atrial region segmentation.
  • Improve delineation of thin mid-atrial walls within the B-spline Explicit Active Surfaces framework.

Main Methods:

  • A double-stage segmentation process: fast contour growing followed by local descriptor refinement.
  • Independent region functions combined to compete for optimal boundary delineation.
  • Integration into the B-spline Explicit Active Surfaces framework.

Main Results:

  • The competitive strategy achieved accurate segmentation of atrial and aortic regions, comparable to state-of-the-art methods.
  • Demonstrated superior performance over traditional free-evolution approaches, especially in poor image quality scenarios.
  • Successfully segmented challenging thin atrial/aortic walls, outperforming existing techniques.

Conclusions:

  • The proposed competitive strategy offers accurate atrial region segmentation, particularly for thin mid-walls.
  • This approach enhances the value of cardiac imaging for interventions requiring precise wall delineation.
  • The method shows significant advantages over traditional techniques for complex cardiac anatomy segmentation.