A novel clutter rejection scheme in color flow imaging

详细信息    查看全文

• 作者：Pei-Dong Wang ; Yi Shen ; Nai-Zhang Feng
• 关键词：Clutter rejection ; Down-mixing ; Stationary echo canceling
• 刊名：Ultrasonics
• 出版年：2006
• 出版时间：22 December 2006
• 年：2006
• 卷：44
• 期：Supplement 1
• 页码：e303-e305
• 全文大小：158 K

文摘

In ultrasound color flow imaging systems, it is important to suppress the clutter signals originated from stationary and slowly moving tissue sufficiently. Without sufficient clutter rejection, the estimation of the blood flow velocity will be inaccurate, and the imaging quality will be poor. In this paper we present a new clutter rejection scheme involving first down-mixing the clutter signals to zero frequency and then canceling the stationary echo by subtracting the signals from two consecutive pulses. This stationary echo canceling scheme is easy to be realized with small computational power, and is adaptive to the clutter signals. Theoretical analysis and simulation using RF data prove that it’s an efficient and practical clutter rejection scheme for color flow imaging.