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Computational Tasks in Bronchoscope Navigation During Computer-Assisted Transbronchial Biopsy

  • Jarosław Bułat
  • Krzysztof Duda
  • Mirosław Socha
  • Paweł Turcza
  • Tomasz Zieliński
  • Mariusz Duplaga
Part of the Lecture Notes in Computer Science book series (LNCS, volume 5103)

Abstract

The paper presents algorithmic solutions dedicated to computer navigation system which is to assist bronchoscope positioning during transbronchial needle-aspiration biopsy. The navigation exploits principle of on-line registration of real images coming from endoscope camera and virtual ones generated on the base of computed-tomography (CT) data of a patient. When these images are similar an assumption is made that the bronchoscope and virtual camera have approximately the same position and view direction. In the paper the following computational aspects are described: correction of camera lens distortion, fast approximate estimation of endoscope ego-motion, reconstruction of bronchial tree from CT data by means of their segmentation and its centerline calculation, virtual views generation, registration of real and virtual images via maximization of their mutual information and, finally, efficient parallel and network implementation of the navigation system which is under development.

Keywords

Mutual Information Motion Estimation Compute Tomography Data Bronchial Tree Virtual Image 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2008

Authors and Affiliations

  • Jarosław Bułat
    • 1
  • Krzysztof Duda
    • 1
  • Mirosław Socha
    • 1
  • Paweł Turcza
    • 1
  • Tomasz Zieliński
    • 2
  • Mariusz Duplaga
    • 3
  1. 1.Department of Measurement and InstrumentationAGH University of Science and TechnologyKrakówPoland
  2. 2.Department of TelecommunicationsAGH University of Science and TechnologyKrakówPoland
  3. 3.Collegium MedicumJagiellonian UniversityKrakówPoland

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