Reducing Dark Region Artifacts in Short-Lag Spatial Coherence (SLSC) Beamforming by Coherence Filtering of the Aperture-Domain Data
Reducing Dark Region Artifacts in Short-Lag Spatial Coherence (SLSC) Beamforming by Coherence Filtering of the Aperture-Domain Data
复制标题
通过孔径域数据的相干滤波减少短滞后空间相干 (SLSC) 波束形成中的暗区伪影
DOI：
10.1109/ius46767.2020.9251674
复制
发表时间：
2020
期刊：
影响因子：
--
通讯作者：
Nie L
中科院分区：
文献类型：
--
作者：
Nie L
短滞后空间相干（SLSC）波束形成器测量由各个换能器元件接收的回波的累积相似性作为空间分离的函数。它有利于抑制非相干杂波，提高对低回声和无回声目标的探测能力。然而，随着聚焦光束的后向散射回波的空间相干性显著地远离焦深而下降，在焦深处由于高水平离轴干扰而发生暗区域伪影，从而在使用SLSC时减小有效景深。本研究的目的是抑制这种人为的辍学，并保持图像的均匀性，通过过滤的孔径域数据的深度。
The short-lag spatial coherence (SLSC) beamformer measures the accumulated similarity of echoes, received by individual transducer elements as a function of spatial separation. It proved beneficial in suppressing incoherent clutter to improve detectability of hypoechoic and anechoic targets. However, with focused beams spatial coherence of backscattered echoes drops significantly away from the focal depth, where dark region artifacts occur due to high-level off-axis interference, reducing the effective depth-of-field when using SLSC. This study aimed to suppress this artificial dropout and keep the image uniformity through depths by filtering the aperture-domain data.
相干波束形成及其在难以成像患者中的应用
DOI：
10.1109/ultsym.2017.8091607
发表时间：
2017
期刊：
2017 IEEE International Ultrasonics Symposium (IUS)
影响因子：
--
作者：
J. Dahl;D. Hyun;Y. Li;M. Jakovljevic;M. Bell;Will Long;Nick Bottenus;V. Kakkad;G. Trahey
通讯作者：
G. Trahey