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Accurate Modelling And Positioning Of A Magnetically-Controlled Catheter Tip, Vi T. H. Le
Accurate Modelling And Positioning Of A Magnetically-Controlled Catheter Tip, Vi T. H. Le
Theses: Doctorates and Masters
This thesis represents the initial phase of a proposed operator and patient friendly method designed to semi-automate the positioning and directing of an intravascular catheter in the human heart using a variable electromagnetically induced field to control a catheter tip equipped with three tiny fixed magnets oriented in XYZ planes. Here we demonstrate a comprehensive mathematical model which accurately calculates the magnetic field generated by the electromagnet system, and the magnetic torques and forces exerted on a three-magnet tip catheter. From this we have developed an iterative predictive computer algorithm to show the displacement and deflection of the catheter tip. …
Factors Which Influence Women's Decisions For Choice Of Primary Surgery For Stage I And Stage Ii Breast Cancer, Barbara Mastaglia
Factors Which Influence Women's Decisions For Choice Of Primary Surgery For Stage I And Stage Ii Breast Cancer, Barbara Mastaglia
Theses : Honours
A descriptive correlational study was conducted to describe the factors that Western Australian women with either Stage I or Stage II Breast Cancer, perceived to be important considerations when deciding upon either Modified Radical Mastectomy (MRM) or Breast Conserving Treatment (BCT) for surgical treatment. The Conflict Theory of Decision Making (Janis & Mann, 1977) was used as the theoretical framework to guide this study. Ward, Heidrich and Wolberg's (1989) Factor List, the Multidimensional Health Locus of Control (MHLC) Scale (Wallston, Wallston & De Vellis, 1978) and a demographic questionnaire were used to measure variables. Questionnaires were mailed to a consecutive …