Logo des Repositoriums
Zur Startseite
  • English
  • Deutsch
Anmelden
  1. Startseite
  2. SuUB
  3. Dissertationen
  4. Motion Tracking for Medical Applications using Hierarchical Filter Models
 
Zitierlink URN
https://nbn-resolving.de/urn:nbn:de:gbv:46-00106879-12

Motion Tracking for Medical Applications using Hierarchical Filter Models

Veröffentlichungsdatum
2018-11-01
Autoren
Rothlübbers, Sven  
Betreuer
Günther, Matthias  
Gutachter
Zachmann, Gabriel  
Zusammenfassung
A medical intervention often requires relating treatment to the situation, which it was planned on. In order to circumvent undesirable effects of motion during the intervention, positional differences must be detected in real-time. To this end, in this thesis a hierarchical Particle Filter based tracking algorithm is developed in three stages. Initially, a model description of the individual nodes in the aspired hierarchical tree is presented. Using different approaches, properties of such a node are derived and approximated, leading to a parametrization scheme. Secondly, transformations and appearance of the data are described by a fixed hierarchical tree. A sparse description for typical landmarks in medical image data is presented. A static tree model with two levels is developed and investigated. Finally, the notion of 'association' between landmarks and nodes is introduced in order to allow for dynamic adaptation to the underlying structure of the data. Processes for tree maintenance using clustering and sequential reinforcement are implemented. The function of the full algorithm is demonstrated on data of abdominal breathing motion.
Schlagwörter
Medical Imaging

; 

Hierarchical

; 

Tracking
Institution
Universität Bremen  
Fachbereich
Fachbereich 01: Physik/Elektrotechnik (FB 01)  
Dokumenttyp
Dissertation
Zweitveröffentlichung
Nein
Sprache
Englisch
Dateien
Lade...
Vorschaubild
Name

00106879-1.pdf

Size

19.97 MB

Format

Adobe PDF

Checksum

(MD5):5520c9a6a6af8788a3529a83293e5763

Built with DSpace-CRIS software - Extension maintained and optimized by 4Science

  • Datenschutzbestimmungen
  • Endnutzervereinbarung
  • Feedback schicken