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最小方差波束形成与广义相干系数融合的医学超声成像方法
引用本文:吴文焘,蒲杰,吕燚.最小方差波束形成与广义相干系数融合的医学超声成像方法[J].声学学报,2011,36(1):66-72.
作者姓名:吴文焘  蒲杰  吕燚
作者单位:中国科学院声学研究所,北京,100190
基金项目:中国科学院知识创新工程重要方向资助项目(KGCX2-YW-915)
摘    要:为了在医学超声成像过程中提高分辨率并修正由生物组织的声速不均匀性引入的聚焦误差,提出了将最小波束形成与广义相干系数融合的高分辨率成像方法.首先对阵元数据进行延时聚焦处理,得到了聚焦后的多通道数据;然后对多通道数据进行最小方差波束形成,同时把阵元数据变换到波束域,计算广义相干系数;最后利用广义相干系数加权最小波束形成的结...

关 键 词:超声成像  高分辨率  广义  最小方差  对比度  医学超声  相干系数  成像方法  鲁棒性  自适应波束形成  

Medical ultrasound imaging method combining minimum variance beamforming and general coherence factor
WU Wentao,PU Jie,L Yi.Medical ultrasound imaging method combining minimum variance beamforming and general coherence factor[J].Acta Acustica,2011,36(1):66-72.
Authors:WU Wentao  PU Jie  L Yi
Institution:WU Wentao PU Jie L(U|¨) Yi (Institute of Acoustics,Chinese Academy of Sciences Beijing 100190)
Abstract:In medical ultrasound imaging field,in order to obtain high resolution and correct the phase errors induced by the velocity inhomogeneity of the tissue,a high-resolution medical ultrasound imaging method combining minimum variance beamforming and general coherence factor is presented.Firstly,the data from the elements is delayed for focusing; then the multi-channel data is used for minimum variance beamforming;at the same time,the data is transformed from array space to beam space to calculate the general c...
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