• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>ICME International Conference on Complex Medical Engineering >Barker Coded Excitation Using LFM Carrier for Improving Axial Resolution in Ultrasound Imaging
【24h】

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

机译：使用LFM载体的Barker编码激发，用于提高超声成像中的轴向分辨率

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

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 LFM-Barker 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.
机译：提高超声成像系统的轴向分辨率可以具有广泛的临床影响。在本文中，新的Barker编码激励使用LFM载体（LFM-BARKOR编码激发）代替正弦载体（正弦波载体编码激发）。开发了LFM-Barker编码激励的脉冲压缩方案，由LFM失配过滤器组成，Barker匹配过滤器和侧链抑制滤波器。在模拟中，与正弦波孔编码激发相比，使用LFM-Barker编码激励，SNR增益小于1dB的SNR增益略微降低，轴向分辨率几乎加倍。 -6 dB mainlobe宽度分别为0.6μs和1.5μs。在-35 dB中观察到最大范围Sidelobe电平。另外，LFM-Barker编码激励对于组织的频率依赖性衰减是鲁棒的。进行了B模式图像的模拟，以证明LFM-BARKER编码的良好轴向分辨率的激励系统的优点。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号