电子学报2018，Vol.46Issue(1)：31-38,8.DOI:10.3969/j.issn.0372-2112.2018.01.005
符号相干系数加权的超声平面波复合成像算法
Ultrasound Imaging Based on Coherent Plane Wave Compounding Weighted by Sign Coherence Factor
摘要
Abstract
Plane wave imaging has been widely used in many applications.It has high frame rate but relatively poor image quality.Coherent plane wave compounding(CPWC) is an imaging method of summing beamformed outputs of array elements from different plane wave firing events,which can significantly improve the quality.However,the coherence between the plane waves is out of consideration.In this paper,we proposed a novel method in which CPWC is weighted by the sign coherence factor(SCF-CPWC).Firstly,a vector is composed by the beamformed outputs of the multiple steered plane wave firings on the same image point.Secondly,the sign coherence factor(SCF) of the vector is calculated,and then employed to weight the corresponding output of CPWC to get the final imaging result.Both simulation and experimental results demonstrate that the proposed SCF-CPWC method has achieved a better performance than CPWC.Compared to CPWC,it can not only improve the lateral resolution,but also increase the anechoic cyst contrast.关键词
超声成像/相干平面波复合成像/符号相干系数Key words
ultrasonic imaging/coherent plane wave compounding/sign coherence factor分类
信息技术与安全科学引用本文复制引用
郑驰超,彭虎,赵巍..符号相干系数加权的超声平面波复合成像算法[J].电子学报,2018,46(1):31-38,8.基金项目
国家自然科学基金青年科学基金(No.61201060) （No.61201060）
国家自然科学基金(No.61172037) （No.61172037）
