数字双波束合成孔径超声成像方法的研究与实现

Study and Implementation on a Novel Ultrasound Imaging Approach Based on Techniques of Digital Beamforming and Synthetical Aperture

以提高超声诊断系统的性/价比为目标,提出了一种数字化超声图像合成的新方法,利用双波束合成技术将帧频加倍和利用合成孔径技术将接收通道个数减半。在分析和仿真的基础上,详细地讨论了其硬件设计的要点,并进行了实验验证。实验结果表明,该方法且不损失帧频和图像质量,可显著降低系统成本。

To improve the performances and to reduce the cost of an ultrasonic imaging system, a novel digital imaging approach was proposed, which combines the dual beamformation technique capable of doubling frame rate with the synthetical aperture technique halving the number of receiving channels needed. Besides theoretical analysis and simulations, its hardware implementation was discussed in detail, cmbodied and finally tested on a practical ultrasonic imaging system. The experimental results show that with this approach, the cost of receiving circuit can be reduced remarkably without losing the frame rate and image quality.