Aberration compensation of an ultrasound imaging instrument with a reduced number of channels.
Aberration compensation of an ultrasound imaging instrument with a reduced number of channels.
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DOI：
10.1109/tuffc.2012.2447
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发表时间：
2012-10
期刊：
影响因子：
--
通讯作者：
Waag RC
中科院分区：
文献类型：
--
作者：
Jiang W;Astheimer JP;Waag RC
使用像校正的超声成像系统的聚焦和成像质量是通过实验性研究的，可以通过降低平行通道的信号来降低硬件和计算成本，以降低多个物理元素的信号。从各种元素大小的综合阵列中，通过比较补偿的接收聚焦，补偿焦点以及补偿的B扫描图像和囊肿幻像的阵列，其在所有实验中都可以通过phatorations trientations trientation thales trientation thales the Share the Share the Share the Share the the的阵列。 Thetic阵列在对角长度小于差距长度的70％的俯仰群体的重点和大约相同质量的图像之间。
Focusing and imaging qualities of an ultrasound imaging system that uses aberration correction were experimentally investigated as functions of the number of parallel channels. Front-end electronics that consolidate signals from multiple physical elements can be used to lower hardware and computational costs by reducing the number of parallel channels. However, the signals from sparse arrays of synthetic elements yield poorer aberration estimates. In this study, aberration estimates derived from synthetic arrays of varying element sizes are evaluated by comparing compensated receive focuses, compensated transmit focuses, and compensated b-scan images of a point target and a cyst phantom. An array of 80 × 80 physical elements with a pitch of 0.6 × 0.6 mm was used for all of the experiments and the aberration was produced by a phantom selected to mimic propagation through abdominal wall. The results show that aberration correction derived from synthetic arrays with pitches that have a diagonal length smaller than 70% of the correlation length of the aberration yield focuses and images of approximately the same quality. This connection between correlation length of the aberration and synthetic element size provides a guideline for determining the number of parallel channels that are required when designing imaging systems that employ aberration correction.