| Summary: | 碩士 === 國立成功大學 === 醫學工程研究所碩博士班 === 91 === Hyperthermia is one of the therapeutic treatments in physical therapy. The effects of hyperthermia are primarily on vasodilatation, pain control, alternation of tissue material properties, and increasing metabolic rate. Temperature distribution during hyperthermia is essential for physical therapist. Most of researches for temperature distribution during hyperthermia were to measure the temperature by thermo couple at discrete locations. On the other hand, finite element simulation could provide entire temperature distribution of the tissue and is suitable for parametric analysis.
The purpose of this study was to evaluate temperature distribution at human thigh during hydrotherapy using finite element analysis. The model of thigh was built based on the image data from The Visible Human Project developed by National Library of Medicine, USA. Parametric analysis was also included in this study to examine various factors, which influence the temperature distribution during hydrotherapy. The results of this study demonstrated that hydrotherapy is indeed a superficial heat treatment, that is, the temperature rising only occurred at superficial tissue. The main factors, influenced the temperature distribution, are temperature of water and blood flow effects. In addition, fat thickness and limb size would affect the temperature distribution. However, their effects are minimal. For muscle, the temperature variations were less than 0.5℃ under current simulated different tissue structures. The results of this study can provide guideline for physical therapist to prescript superficial heat modalities.
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