Item – Thèses Canada

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Numéro d'OCLC
28495039
Auteur
Chan, Fai-Hung,1960-
Titre
Three-dimensional reconstruction of skull from magnetic resonance images.
Diplôme
M. Sc. -- University of Alberta, 1990
Éditeur
Ottawa : National Library of Canada = Bibliothèque nationale du Canada, 1991.
Description
2 microfiches.
Notes
University Microfilms order no. UMI00295687.
Includes bibliographical references.
Résumé
Scaphocephaly refers to the premature closure of the sagittal suture resulting in a long and narrow head. Since it does not significantly affect brain growth, the single reason for surgical intervention is cosmetic improvement. The planning and evaluation of these surgical operations depends on radiological imaging but the three-dimensional structures are not fully represented by the planar format of magnetic resonance imaging. A three-dimensional reconstruction software application is developed to provide a tool for evaluation and visualization of the three-dimensional bony architecture of the skull. The three-dimensional reconstruction application is implemented by two programs: 'HEAD' and '3D'. The program 'HEAD' performs boundary extraction from a set of magnetic resonance images and provides filtering operations to enhance the quality of the image for the extraction step. The program '3D' uses the boundary data extracted by 'HEAD' to create a three-dimensional model and displays the model using wire-frame display mode with or without hidden surface removal. The application runs on a desktop computer and can be used in a clinical environment to evaluate the effectiveness of the surgical treatment to children with scaphocephaly.
ISBN
0315650834
9780315650831