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An optimization based approach embedded in a fuzzy connectivity algorithm for airway tree segmentation

Yousefi Rizi, F ; Sharif University of Technology | 2008

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  1. Type of Document: Article
  2. Publisher: 2008
  3. Abstract:
  4. The main problem with airway segmentation methods which significantly influences their accuracy is leakage into the extra-luminal regions due to thinness of the airway wall during the process of segmentation. This phenomenon potentially makes large regions of lungparenchyma to be wrongly identified as airways. A solution to this problem in the previous methods was based on leak detection followed by reducing leakage during the segmentation process. This has been dealt with adjusting the segmentation parameters and performing the re-segmentation process on the pre-segmented area. This makes the algorithm very exhaustive and more dependent on the user interaction. The method presented here is to apply a mathematical shape optimization approach embedded in an efficient fuzzy connectivity based segmentation algorithm to preserve shape features of the object to perform a precise segmentation. The novelty of our proposed scheme is to prevent the leakage root rather than taking leak detection and reduction approaches. This is carried out by minimizing a gradient based cost function which employs shape features of circle/cylindrical structure of airway tree during the process of segmentation. © 2008 IEEE
  5. Keywords:
  6. Leak detection ; Trees (mathematics) ; Airway tree segmentation ; Airway trees ; Airway walls ; Fuzzy connectivity ; Gradient descent ; Gradient-based ; Large regions ; Optimization approaches ; Segmentation algorithms ; Segmentation methods ; Segmentation process ; Shape features ; User interactions ; Shape optimization ; Algorithm ; Automated pattern recognition ; Computer assisted tomography ; Histology ; Human ; Methodology ; Normal distribution ; Radiography ; Statistical model ; Theoretical model ; Three dimensional imaging ; Algorithms ; Bronchography ; Computer simulation ; Fuzzy logic ; Humans ; Imaging, three-dimensional ; Lung ; Models, statistical ; Models, theoretical ; Normal distribution ; Pattern recognition, automated ; Tomography, x-ray computed
  7. Source: Proceedings of the 30th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS'08 - "Personalized Healthcare through Technology", 20 August 2008 through 25 August 2008, Vancouver, BC ; 2008 , Pages 4011-4014 ; 9781424418152 (ISBN)
  8. URL: https://ieeexplore.ieee.org/document/4650089?arnumber=4650089