| 凹球面聚焦超声换能器用于热疗时在人体内引起的瞬态温度场 |
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| 引用本文： | 钱盛友,孙福成,王鸿樟.凹球面聚焦超声换能器用于热疗时在人体内引起的瞬态温度场[J].中国生物医学工程学报,2001,20(3):236-241. |
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| 作者姓名： | 钱盛友 孙福成 王鸿樟 |
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| 作者单位： | 1. 湖南师范大学物理系,华南师大激光生命研究所做博士后
2. 上海交通大学生物医学工程系, |
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| 基金项目： | 湖南省教委基金资助项目(22990505) |
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| 摘 要： | 本文引入了虚拟热源的概念，分析了边界条件对升温的影响及加热时间及温度场点位置的关系，详细研究了声源参数及生物组织特性参数对治疗区升温快慢的影响，比较了聚焦参数相同的册球面换在和高斯换能器声焦点的瞬态温度，所得结果对超声热疗的实施具有指导作用。
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| 关 键 词： | 聚焦超声 换能器 热疗 瞬态温度场 |
| 修稿时间： | 1999年4月13日 |
TRANSIENT TEMPERATURE FIELDS IN BODY INDUCED BY FOCUSED CONCAVE SPHERICAL SURFACE TRANSDUCER DURING ULTRASOUND HYPERTHERMIA |
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| Qian Shengyou.TRANSIENT TEMPERATURE FIELDS IN BODY INDUCED BY FOCUSED CONCAVE SPHERICAL SURFACE TRANSDUCER DURING ULTRASOUND HYPERTHERMIA[J].Chinese Journal of Biomedical Engineering,2001,20(3):236-241. |
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| Authors: | Qian Shengyou |
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| Abstract: | A concept of imaginary heat source was introduced. The influence of boundary condition on temperature elevation at different insonation time and at different site in the temperature field was analysed, and the influence of sound source parameters and biological tissue properties on the velocity of temperature elevation was studied in detail. Finally, transient temperature at focus induced by focused concave spherical surface transducer was compared with that induced by gaussian transducer owning the same focused parameters. All results obtained were useful for ultrasound hyperthermia in clinic. |
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| Keywords: | Focused ultrasound Transducer Hyperthermia Transient temperature field |
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