深圳大学学报（理工版）2011，Vol.28Issue(2)：165-171,7.
超声编码激励产生声辐射力的数值模拟
Numerical Simulation on acoustic radiation force induced by ultrasonic coded excitation
摘要
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.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/超声弹性成像分类
医药卫生引用本文复制引用
陈思平,曾斯宁,汪天富,覃正笛..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(2):165-171,7.基金项目
国家自然科学基金资助项目(60871060) （60871060）
深圳市科技计划基础研究重点项目(JC200903120129A) （JC200903120129A）
