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題 名 | 高能聚焦超音波治療攝護腺腫瘤熱分析=Thermal Analysis of High-Intensity Focused Ultrasound Therapy for Prostate Tumor |
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作 者 | 溫超東; 沈鈺翔; | 書刊名 | 中華科技大學學報 |
卷 期 | 50 2012.01[民101.01] |
頁 次 | 頁35-47 |
分類號 | 415.863、415.863 |
關鍵詞 | 高能聚焦超音波; 攝護腺腫瘤; 生物熱傳; 移動邊界; 熱治療; High intensity focused ultrasound; HIFU; Prostate tumor; Bioheat transfer; Moving boundary; Thermal therapy; |
語 文 | 中文(Chinese) |
中文摘要 | 本研究在於以COMSOL的暫態熱傳導模組分析高能聚焦超音波治療攝護腺腫瘤時的溫度分布,聚焦超音波的功率為37.8W,焦距為40mm,焦點的直徑設為1.8mm,焦點的單位體積能量吸收密度為1.2x108 W/m^3,治療時以每次作用3秒、暫停6秒為一完整脈衝,再對另一點進行HIFU脈衝。分析結果顯示在HIFU作用的3秒內,焦點的溫度從37℃升高至約95℃,中間部份有效熱治療的高度可達30mm,在邊界部份因散熱較易,故有效範圍較中間部份小,因此進行熱治療時對於邊界部份,HIFU治療的參數可能需要改變。 |
英文摘要 | The temperature distribution of the High Intensity Focused Ultrasound (HIFU) therapy for prostate tumor is calculated by the Transient Conduction Model of COMSOL Multiphysics. The power of the HIFU is 37.8 W, the focal distance is 40 mm, and the focal point diameter is 1.8 mm. The volumetric specific absorption rate at the focal point is assumed to be 1.2 x 10 8 W/m3. During treatment, the HIFU transducer is power on 3 seconds and then power off 6 seconds for moving to the next position. The analysis shows that after 3 seconds of HIFU treatment, the temperature of the tumor tissue at the focal point is raised to about 95℃. At the center of the tumor, the effective treatment is more than 30 mm in length. At the boundary areas of the tumor, due to the large heat dissipation, the effective treatment area is smaller than that in the center area. Therefore it is suggested that the HIFU treatment parameters for the tumor boundary areas needs to be modified. |
本系統中英文摘要資訊取自各篇刊載內容。