| 两种不同聚焦超声源对生物媒质加热作用的比较 |
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| 引用本文： | 钱盛友,刘习春,周心一. 两种不同聚焦超声源对生物媒质加热作用的比较[J]. 激光生物学报, 2003, 12(6): 401-405 |
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| 作者姓名： | 钱盛友 刘习春 周心一 |
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| 作者单位： | 湖南师范大学物理与信息科学学院,中国湖南,长沙,410081 |
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| 基金项目： | 湖南省自然科学基金资助项目(02JJY2059)，湖南省教育厅资助科研项目(02C201)。 |
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| 摘 要： | 计算了凹球面自聚焦超声源和聚焦高斯超声源在生物媒质中产生的声场及温度场，并对其主要特征进行了分析。比较了不同条件下此两种聚焦超声源用于热疗时的有效治疗区及声焦点处的升温快慢，揭示了它们对生物组织加热作用的差异，证实最大温升主要取决于最大声吸收率。
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| 关 键 词： | 聚焦超声 热疗 生物组织 声场 温度场 |
| 文章编号： | 1007-7146(2003)06-0401-05 |
| 收稿时间： | 2003-05-12 |
| 修稿时间： | 2003-05-12 |
Comparison of the Thermal Effects in Biological Medium Induced by Two Different Kinds of Focused Ultrasound Sources |
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| QIAN Sheng-you,LIU Xi-chun,ZHOU Xin-yi. Comparison of the Thermal Effects in Biological Medium Induced by Two Different Kinds of Focused Ultrasound Sources[J]. ACTA Laser Biology Sinica, 2003, 12(6): 401-405 |
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| Authors: | QIAN Sheng-you LIU Xi-chun ZHOU Xin-yi |
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| Abstract: | The sound fields and temperature fields in biological medium generated by concave spherical ultrasound source and focused gaussian ultrasound source were calculated, and their characteristics were analyzed. While these two kinds of focused ultrasound sources were used for hyperthermia, their effective treatment areas and their transient temperatures at the acoustic focus were compared under various conditions. The results indicate the thermal effects induced by them are different, and the maximum temperature elevations mainly depend on maximum sound absorption rate. |
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| Keywords: | focused ultrasound hyperthermia biological tissue sound field temperature field |
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