Theoretical analysis of chirp excitation of contrast agents

详细信息    查看全文

• 作者：Euan Barlow ; Anthony J. Mulholl ; Alison Nordon ; Anthony Gachagan
• 关键词：Ultrasound contrast agent ; Chirp ; Second harmonic ; Theoretical ; Small parameter perturbation
• 刊名：Physics Procedia
• 出版年：2010
• 出版时间：1 January 2010
• 年：2010
• 卷：3
• 期：1
• 页码：743-747
• 全文大小：442 K

文摘

Analytic expressions are found for the amplitude of the first and second harmonics of the Ultrasound Contrast Agent’s (UCA’s) dynamics when excited by a chirp. The dependency of the second harmonic amplitude on the system parameters, the UCA shell parameters, and the insonifying signal parameters is then investigated. It is shown that optimal parameter values exist which give rise to a clear increase in the second harmonic component of the UCA’s motion.