[1]陈思平,曾斯宁,汪天富,等.超声编码激励产生声辐射力的数值模拟[J].深圳大学学报理工版,2011,28(No.2(095-188)):165-171.
 CHEN Si-ping,ZENG Si-ning,WANG Tian-fu,et al.Numerical simulation on acoustic radiation force induced by ultrasonic coded excitation[J].Journal of Shenzhen University Science and Engineering,2011,28(No.2(095-188)):165-171.
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超声编码激励产生声辐射力的数值模拟()
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《深圳大学学报理工版》[ISSN:1000-2618/CN:44-1401/N]

卷:
第28卷
期数:
2011年No.2(095-188)
页码:
165-171
栏目:
生物工程
出版日期:
2011-03-20

文章信息/Info

Title:
Numerical simulation on acoustic radiation force induced by ultrasonic coded excitation
文章编号:
1000-2618(2011)02-0165-07
作者:
陈思平曾斯宁汪天富覃正笛
深圳大学医学院 深圳市生物医学工程重点实验室,深圳 518060
Author(s):
CHEN Si-pingZENG Si-ningWANG Tian-fuand QIN Zheng-di
College of Medicine,Shenzhen Key Lab of Boimedical Engineering,Shenzhen University,Shenzhen 518060,P.R.China
关键词:
生物医学仪器生物物理学脉冲编码调制声辐射力分布函数占空比超声弹性成像
Keywords:
biomedical instrumentationbiophysicspulse code modulationacoustic radiation forcedistribution functionsduty ratiosultrasonic elastography
分类号:
R 318.6;Q 681
文献标志码:
A
摘要:
基于编码扩谱原理,在超声弹性成像技术中,提出用编码激励产生声辐射力的方法,分析其原理并建立了概率统计模型,研究编码激励在各向同性均匀介质中产生的超声剪切波的分布特性.数值仿真结果表明,用编码脉冲激励产生声辐射力的方法可提高系统的时间和频宽利用率,同时结合脉冲超声检测编码调制技术的支持,可减少对激励信号占空比的局限,提高声辐射的穿透力和回波信噪比.
Abstract:
A coded excitation method in ultrasonic elastography,based on the spread spectrum technology,was proposed.A statistical model for the shear wave distribution in the ultrasound field was set up.The theoretical analysis as well as the computer simulation shows that using a coded excitation for the system resources it is more efficient than using a pulsed excitation.Combining the detection technology with coded pulses using different codes for sharewave excitation and the detection,a lower cross-correlation can be achieved so that both the duty cycle of the excitation and the signal-to-noise ratio of the detection can be improved for the whole system.

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备注/Memo

备注/Memo:
收稿日期:2010-06-29;修回日期:2010-11-02
基金项目:国家自然科学基金资助项目(60871060);深圳市科技计划基础研究重点项目(JC200903120129A)
作者简介:陈思平(1948-),男(汉族),江西省丰城市人,深圳大学教授、博士生导师.E-mail:chensiping@szu.edu.cn
通讯作者:覃正笛(1951-),男(土家族),深圳大学教授.E-mail:finyan@szu.edu.cn
更新日期/Last Update: 2011-03-28