The Acoustic Design for Rib Sparing HIFU Surgery
| Autor: | Che-Jung Hsu, 許哲榮 |
|---|---|
| Rok vydání: | 2013 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 101 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. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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