Speed-of-sound estimation in ultrasound propagation medium by considering size of target scatterer
Speed-of-sound estimation in ultrasound propagation medium by considering size of target scatterer
复制标题
考虑目标散射体尺寸的超声传播介质中的声速估计
DOI：
10.1007/s10396-023-01282-2
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发表时间：
2023
影响因子：
1.8
通讯作者：
Mototaka Arakawa
中科院分区：
文献类型：
--
作者：
Shohei Mori;Hiroshi Kanai;Mototaka Arakawa
目的超声传播介质中准确的声速 (SoS) 估计可提高成像质量并有助于更好地诊断疾病。在几个小组研究的传统的基于时延的 SoS 估计方法中，假设接收波是从理想的点散射体散射的。在这些方法中，当目标散射体的尺寸不可忽略时，SoS 会被高估。在本文中，我们提出了考虑目标大小的SoS估计方法。方法在所提出的方法中，使用传统的基于时间延迟的方法估计的SoS的误差率是利用接收元素和目标之间的几何关系从可测量参数确定的。随后，通过所确定的估计误差率来校正假设理想点散射体作为目标、使用传统估计错误地估计的SoS。为了验证所提出的方法，对几种电线尺寸的水中的 SoS 进行了估计。结果使用传统的 SoS 估计方法高估了水中的 SoS，最大正误差为 38 m/s。所提出的方法校正了 SoS 估计，并且无论线直径如何，误差都被抑制在 6 m/s 以内。结论目前的结果表明，所提出的方法可以通过考虑目标尺寸来估计 SoS，而不需要使用真实 SoS、真实目标深度和真实目标尺寸的信息，这适用于体内测量。
PurposeAccurate speed-of-sound (SoS) estimation in an ultrasound propagation medium improves imaging quality and contributes to better diagnosis of diseases. In conventional time-delay-based SoS estimation approaches studied by several groups, a received wave is assumed to be scattered from an ideal point scatterer. In these approaches, the SoS is overestimated when the target scatterer has a non-negligible size. In this paper, we propose the SoS estimation method that considers target size.MethodsIn the proposed method, the error ratio of the estimated SoS using the conventional time-delay-based approach is determined from measurable parameters using the geometric relationship between the received elements and target. Subsequently, the SoS erroneously estimated using conventional estimation, assuming the ideal point scatterer as a target, is corrected by the determined estimation error ratio. To validate the proposed method, the SoS in water was estimated for several wire sizes.ResultsThe SoS in the water was overestimated using the conventional SoS estimation method, with a maximum positive error of 38 m/s. The proposed method corrected the SoS estimates, and the errors were suppressed to within 6 m/s, irrespective of the wire diameter.ConclusionThe present results demonstrate that the proposed method can estimate the SoS by considering the target size without using information on the true SoS, true target depth, and true target size, which is applicable to in vivo measurements.
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影响因子：
3.5
作者：
Imbault, Marion;Faccinetto, Alex;Tanter, Mickael
通讯作者：
Tanter, Mickael
影响因子：
0.9
作者：
HAYASHI, N;TAMAKI, N;KODAMA, M
通讯作者：
KODAMA, M
生物组织中超声传播速度的估计：波束跟踪方法
DOI：
10.1109/t-uffc.1986.26843
发表时间：
1986
期刊：
IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
影响因子：
--
作者：
J. Ophir
通讯作者：
J. Ophir
体内肝脏和脾脏的临床声速测量
影响因子：
2.3
作者：
C. Chen;D. Robinson;L. Wilson;K. Griffiths;A. Manoharan;B. Doust
通讯作者：
B. Doust