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研究生:許書豪
研究生(外文):Xu, Shu-Hao
論文名稱:應用格林函數法於生物熱傳之研究─以體外聚焦式超音波熱療為例
論文名稱(外文):Study of the Bioheat Transfer by the Method of Green's function for the External Focused Ultrasound Hyperthermia
指導教授:黃元茂林文澧林文澧引用關係
指導教授(外文):Huang, Yuan-MaoLin, Wen-Li
學位類別:碩士
校院名稱:國立臺灣大學
系所名稱:機械工程研究所
學門:工程學門
學類:機械工程學類
論文種類:學術論文
論文出版年:1997
畢業學年度:85
語文別:中文
論文頁數:88
中文關鍵詞:格林函數生物熱傳超音波熱療機械工程工程
外文關鍵詞:Green's fucntionBioheat transferUltrasoundHyperthermiaMECHANICAL-ENGINEERINGENGINEERING
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The temperature distribution induced by the
focused ultrasound hyperthermia is studied theoretically with
the different focused ultrasound transducers and the blood
perfusion rates. The three-dimensional transient mathematical
model includes both the ultrasound power depositions caused by
the spherical focused transducers and the Pennes model to
described the heat transfer for the blood perfusion. The
tissue is treated as a semi-infinite region in the space. It
is assume that the initial temperature of the tissue is 310.15
K, the surface temperature is kept at 310.15 K, and the
temperature of the tissue far from the surface approaches
310.15 K. With Green's function, the temperature distribution
is represent in a simple interation.
Accoding to the calculated result, three different
controlling mechanics of the temperature development are
identified. The ultrasound power deposition plays an
important role in the beginning of time. At the time near
the initial time, the variation of the temperature is
proportional to the ultrasound power deposition. As the time
goes by, the heat conduction shows its effect in the
temperature development. It explains why the position with the
low ultrasound power deposition may have a growth of the
temperature and why the temperature distribution finally
becomes smoother. When the time is longer, the blood perfusion
becomes domiant. The blood perfusion not only determines when
the transient process of the temperature development stops
but also affects the asymptotic value of the temperature
development. If the blood perfusion is stronger, the transient
process will be shorter and the asymptotic value of the
temperature will be lower.

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