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標題: | 應用於HIFU手術肋骨保護之聲學設計 The Acoustic Design for Rib Sparing HIFU Surgery |
作者: | Che-Jung Hsu 許哲榮 |
指導教授: | 顏家鈺(Jia-Yush Yen) |
關鍵字: | 消音器,HIFU手術,Pennes方程式,轉移矩陣分析法,赫姆霍茲共鳴器,聲機電類比, Muffler,HIFU therapy,Pennes equation,Transfer matrix method,Helmholtz resonator,Electro-mechano-acoustical analogy, |
出版年 : | 2013 |
學位: | 碩士 |
摘要: | HIFU (High Intensity Focused Ultrasound)手術為腫瘤患者提供一種較少副作用的療程,HIFU療程可適用燒灼在多種類型的腫瘤上並已有許多治療成功的案例,近年來HIFU手術開始嘗試治療更棘手的腫瘤,此類型的腫瘤許多都埋藏在肋骨後方,肋骨會阻擋並吸收原本應該進入腫瘤的超音波能量造成治療效果降低並有肋骨過熱壞死的風險,本論文藉由消音器原理設計直接在肋骨前方貼附於表皮上的特殊聲學結構,將聲能在進入肋骨之前先行困在結構內並消耗殆盡,同時達到保護肋骨與超音波探頭的目標,本論文將陳述特殊聲學結構的原理與設計準則,並利用模擬與實驗同步驗證特殊聲學結構設計的成效。 HIFU (High Intensity Focused Ultrasound) offers conservative malignant tumor treatment with very little side effects. The uses of HIFU in medical treatment for malignant tumor have excited many research interests. Its applications range over the treatment of various types of tumors, and there have been many reports on successful treatments. More recent researches on HIFU therapy have started to look into some difficulties to treat tumors. The most encountered situations are the tumors that are hidden behind the rib cage. The ribs both blocked and absorbed the HIFU energy, rendering the treatment ineffective while cause pain to the patient. This thesis explores ways for rib sparing HIFU technology. Instead of the straight forward blocking by sound absorbing material, this thesis looks into the application of muffler theorem and design sound reflecting or sound annihilation channels to redirect the ultrasound energy. It is believed that the sound channel is a more energy-efficient way of rib sparing. The thesis provides both the theoretical development and the design guidelines for the sound annihilation channels. The thesis also provides experimental verifications to show that the approach is in fact effective and is easy to implement. |
URI: | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/62044 |
全文授權: | 有償授權 |
顯示於系所單位: | 機械工程學系 |
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ntu-102-1.pdf 目前未授權公開取用 | 15.5 MB | Adobe PDF |
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