open-UST: An Open-Source Ultrasound Tomography Transducer Array System.
open-UST: An Open-Source Ultrasound Tomography Transducer Array System.
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open-UST：开源超声断层扫描传感器阵列系统。
DOI：
10.1109/tuffc.2023.3280635
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发表时间：
2023
期刊：
影响因子：
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通讯作者：
Roberts M
中科院分区：
文献类型：
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作者：
Roberts M
需要快速成像方法来促进超声断层扫描（UST）的临床采用，并且更广泛可用的UST硬件可以支持新测量配置的实验验证。在这项工作中，开发了开源的256元件换能器环形阵列（morganjroberts. github. io/open-UST），并使用快速原型制造，仅需2000英镑。采用了新的制造技术，导致平均束轴偏斜角为1.17°，平均元件位置误差，匹配层厚度减小。使用水听器扫描和水击数据测量了标称声学性能，发现61.2 dB信噪比（SNR），55.4°开口角，10.2 mm波束宽度和54%收发带宽（−12 dB）与现有系统相似，并与最先进的全波形反演图像重建方法兼容。在不使用标准化的情况下，单元间声学性能的变化通常< 10%，这意味着在图像重建过程中可以对单元进行相同的建模，从而无需基于水听器测量进行单独的源定义。最后，从幻影实验的数据被成功地重建。这些结果表明，开放式UST系统是可访问的用户，适合于UST成像研究。
Fast imaging methods are needed to promote clinical adoption of ultrasound tomography (UST), and more widely available UST hardware could support the experimental validation of new measurement configurations. In this work, an open-source 256-element transducer ring array was developed (morganjroberts.github. io/open-UST) and manufactured using rapid prototyping, for only £2k. Novel manufacturing techniques were used, resulting in a 1.17° mean beam axis skew angle, amean element position error, and adeviation in matching layer thickness. The nominal acoustic performance was measured using hydrophone scans and watershot data, and the 61.2 dB signal-to-noise ratio (SNR), 55.4° opening angle, 10.2 mm beamwidth, and 54% transmit–receive bandwidth (−12 dB) were found to be similar to existing systems and compatible with state-of-the-art full-waveform-inversion image reconstruction methods. The interelement variation in acoustic performance was typically < 10% without using normalization, meaning that the elements can be modeled identically during image reconstruction, removing the need for individual source definitions based on hydrophone measurements. Finally, data from a phantom experiment were successfully reconstructed. These results demonstrate that the open-UST system is accessible for users and is suitable for UST imaging research.