摘要
由 Jianyu L u提出的一种高帧率 (High frame rate,HFR)快速超声成像方法受到了人们的重视 ,但由于这种方法需要对接收信号进行特殊的加权处理 ,成像系统仍有些复杂。我们用角谱原理对 HFR方法进行了一种新的理论分析。基于这个研究 ,原 HFR方法中特殊的加权处理被更简单的 Fourier变换所取代。为了验证这种方法 ,进行了计算机仿真。仿真结果表明重建的图像具有和原 HFR方法所得到图像一样的质量 ,而系统结构大大简化。
A high frame rate (HFR) ultrasonic imaging method developed by Jianyu Lu has been attracting attention in the related imaging area. Because a special weighting on the received signal is needed to implement this method, the imaging system is complicated. This paper presents a new kind of theroetical analysis for the HFR imaging system in view of the angular spectrum concept. Based on the study, the special weighting process can be replaced by Fourier transform. Computer simulation demonstrates the correctness of the analysis. It shows that the constructed images by the new method have the same high quality as those obtained by using the original HFR method while the system implementation is greatly simplified.
出处
《生物医学工程学杂志》
EI
CAS
CSCD
2004年第5期766-769,共4页
Journal of Biomedical Engineering
基金
美国 NIH基金部分资助 ( HL60 3 0 1)
中国科学技术大学校留学基金资助
关键词
高帧率
超声成像系统
加权处理
计算机仿真
仿真结果
Ultrasonic imaging High frame rate Limited diffraction weighting Fourier transform
