Barker Coded Excitation Using LFM Carrier for Improving Axial Resolution in Ultrasound Imaging

摘要：

　　Improving the axial resolution of ultrasound imaging system can have broad clinical impact.In this paper,a novel Barker coded excitation uses LFM carrier (LFM-Barker coded excitation) instead of sinusoid carrier (Sinusoid-Barker coded excitation).Pulse compression scheme of LFM-Barker coded excitation is developed that consists of LFM mismatched filter,Barker matched filter and sidelobe suppression filter.In simulation,the axial resolution is almost doubled with a slight decrease of SNR gain of less than 1 dB using LFM-Barker coded excitation compared to Sinusoid-Barker coded excitation.The –6 dB mainlobe width is 0.6 μs and 1.5 μs,respectively.Maximum range sidelobe level is observed at –35 dB.Additionally LFMBarker coded excitation is robust for frequency dependant attenuation of tissue.Simulation of B-mode images is carried out to demonstrate the advantage of LFM-Barker coded excitation system of good axial resolution.

关键词： Ultrasound imaging Barker coded excitation LFM Pulse compression Axial resolution

作者: Juan Fu Gang Wei Qinghua Huang

作者单位: School of Electronic and Information Engineering South China University of Technology Guangzhou, Guangdong Province, China

会议类型: 国际会议

会议名称: 2013 ICME International Conference on Complex Medical Engineering(2013 ICME复合医学工程国际会议)

会议地点: 北京

会议语种:英文

页码: 150-153

在线出版日期: 2013-05-25（万方平台首次上网日期，不代表论文的发表时间）