The application of k-space in pulse echo ultrasound
The application of k-space in pulse echo ultrasound
复制标题
k空间在脉冲回波超声中的应用
DOI：
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发表时间：
1998
期刊：
影响因子：
--
通讯作者：
G. Trahey
中科院分区：
文献类型：
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作者：
W. Walker;G. Trahey
K 空间是成像系统和目标的频域描述，可用于深入了解图像形成。尽管最初在超声中提出用于分析涉及各向异性散射的实验和声学断层扫描系统的设计，但它对于脉冲回波超声成像系统的分析特别有用。本文介绍了用于估计具有任意发射和接收阵列几何形状和变迹的脉冲回波成像系统的 k 空间表示的分析和概念技术。提出了估计散斑一阶和二阶统计量的简单图形方法。给出的示例利用 k 空间来深入了解空间和频率复合的性能，并描述合成接收孔径几何形状对波束形成和散斑统计的影响。在 k 空间中提出了 Van Cittert-Zernike 定理，并讨论了改善回波相干性的技术。
K-space is a frequency domain description of imaging systems and targets that can be used to gain insight into image formation. Although originally proposed in ultrasound for the analysis of experiments involving anisotropic scattering and for the design of acoustic tomography systems, it is particularly useful for the analysis of pulse echo ultrasonic imaging systems. This paper presents analytical and conceptual techniques for estimating the k-space representation of pulse echo imaging systems with arbitrary transmit and receive array geometries and apodizations. Simple graphical methods of estimating the first and second order statistics of speckle are presented. Examples are presented that utilize k-space to gain insight regarding the performance of spatial and frequency compounding and to describe the impact of synthetic receive aperture geometry on beamforming and speckle statistics. The Van Cittert-Zernike theorem is presented in k-space, and techniques for improving echo coherence are discussed.
影响因子：
2.9
作者：
R. Lerner;R. Waag
通讯作者：
R. Lerner;R. Waag