基于小波的倒谱分析估算球团平均散射体间距的初步研究

2017 Fourth International Conference on Advances in Biomedical Engineering (ICABME) Pub Date : 2017-10-01 DOI:10.1109/ICABME.2017.8167569

R. Nasr, O. Falou, Ahmad Shahin, L. Wirtzfeld, E. Berndl, Michael C. Kolios

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引用次数: 0

摘要

超声后向散射信号包含有关成像生物组织的散射结构的信息;均匀的散射体分布可以用后向散射信号的周期性来表示。这项工作旨在利用小波改进的倒谱分析来表征这些散射体的周期性。该技术在模拟超声信号上进行了测试，其周期性清晰可见。仿真结果表明，该方法可以有效地确定散射体间距值。然后在HT-29细胞颗粒上测试了该技术，估计散射体间距为17.67±3.85 μm。未来的工作包括改进技术，以准确估计组织中的平均散射体间距。

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A preliminary study of the mean scatterer spacing estimation from pellets using wavelet-based cepstral analysis

Ultrasonic backscatteredsignals contain information regarding the scatterer structures of the imaged biological tissues; a uniform scatterer distribution could be represented by periodicities in the backscattered signals. This work aims to characterize these scatterer periodicities using wavelet improved cepstral analysis. This technique was tested on simulated ultrasound signals, where the periodicity was clearly visible. Simulation results indicate that this technique can effectively determine the value of the scatterer spacing. The technique was then tested on a HT-29 cell pellet, where the estimated scatterer spacing was found to be 17.67 ± 3.85 μm. Future work includes improving the technique with the aim of accurately estimating the mean scatterer spacing in tissues.

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2017 Fourth International Conference on Advances in Biomedical Engineering (ICABME)

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