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| 基于互相关函数法的超声无损测温研究 | |
| 引用本文： | 宋平,钱盛友,冯艳玲,孙福成.基于互相关函数法的超声无损测温研究[J].现代电子技术,2007,30(13):130-132. |
| 作者姓名： | 宋平 钱盛友 冯艳玲 孙福成 |
| 作者单位： | 1. 湖南师范大学,物理与信息科学学院,湖南,长沙,410081 2. 中南大学,信息与物理工程学院,湖南,长沙,410083 3. 上海交通大学,上海,200030 |
| 摘 要： | 生物组织的声速随温度变化明显。利用信号处理技术中的互相关函数分析方法,计算超声散射回波信号的时间延迟。通过分析超声散射回波的时间延迟和组织温度的关系,提取生物组织的温度信息。实验结果表明:当以最高温度时的超声散射回波信号为基准信号时,不同温度时的超声散射回波信号与基准信号的时间延迟随着温度的降低而增大。该种处理方法可有效检测到超声散射回波信号的时间延迟随温度变化的趋势。 |
| 关 键 词： | 超声 无损测温 互相关 热疗 |
| 文章编号： | 1004-373X（2007）13-130-03 |
| 收稿时间： | 2006-12-20 |
| 修稿时间： | 2006-12-20 |
Research on Noninvasive Estimation of Temperature Using Diagnostic Ultrasound Based on Cross- correlation Function |
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| SONG Ping,QIAN Shengyou,FENG Yanling,SUN Fucheng.Research on Noninvasive Estimation of Temperature Using Diagnostic Ultrasound Based on Cross- correlation Function[J].Modern Electronic Technique,2007,30(13):130-132. | |
| Authors: | SONG Ping QIAN Shengyou FENG Yanling SUN Fucheng |
| Affiliation: | 1. School of Physics and Information Science, Hunan Normal University, Changsha, 410081, China; 2. School of lnfo - physics and Geomatics Engineering, Cent ral South University, Changsha, 410083, China; 3. Shanghai Jiaotong University, Shanghai, 200030, China |
| Abstract: | The sound speed of biological tissue changes with its temperature obviously.It is founded that cross-correlation function is a useful algorithm for detecting time shifts between two back scattered ultrasonic signals.Temperature information in biological tissue can be extracted by using the relationship of the echo-shift and temperature in tissue.It is showed that the trend of echo-shift with temperature can be measured effectively by this signal processing method.For the back scattered ultrasonic signal at the highest temperature being regarded as benchmark,the time shifts between the back scattered ultrasonic signals at varied temperatures and the benchmark signal are largened with temperature falling. |
| Keywords: | ultrasound noninvasive temperature estimation cross-correlation hyperthermia |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |