文章摘要
何培忠,程海凭,寿文德.超声激发振动声成像实验系统的设计[J].声学技术,2011,(1):78~83
超声激发振动声成像实验系统的设计
Experiment system design for ultrasound stimulated vibro-acoustography
投稿时间:2010-02-26  修订日期:2010-05-30
DOI:
中文关键词: 振动声成像  共焦换能器  差频波  超声激发声发射
英文关键词: vibro-acoustography  confocal transducer  difference frequency wave  ultrasound stimulated acoustic emission(USAE)
基金项目:江苏省高校自然科学研究计划项目(08KJB140010);上海医疗器械高专科研启动项目
作者单位E-mail
何培忠 上海理工大学医疗器械高等专科, 上海, 200093 何培忠,hepz@smic.edu.cn 
程海凭 上海理工大学医疗器械高等专科, 上海, 200093  
寿文德 上海交通大学生物医学工程系, 上海, 200030  
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中文摘要:
      根据超声激发振动声成像的基本原理,设计并构建一个能获得振动声图像的实验系统。该系统由高频信号部分、超声发射及传播部分、低频信号处理和计算机处理与控制等四部分构成。实验表明,该系统能获得生物仿体或软组织内刚性物体的振动声图像,为进行生物组织的振动声成像研究提供了基础;通过采用更高灵敏度的低频水听器和改善共焦换能器的分辨力,可进一步提高成像质量。
英文摘要:
      According to the basic principle of ultrasound stimulated vibro-acoustography,an experiment system of vibro-acoustogram has been designed and constructed.The system consists of four parts: high-frequency signal generator,ultrasound emitting and transmitting part,low-frequency signal processing part and computer processing & controlling part.The experimental result indicates that the vibro-acoustogram of rigid body inside the soft tissue or tissue phantom can be obtained by the system.So the system will give some help to the study of vibro-acoustography in tissue.Furthermore,the imaging quality of the system may be improved by using the hydrophone with higher sensitivity and the confocal transducer with better resolution.
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