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Design of Medical Ultrasound Probe: Measurement System for the Characterization of Reverberations

机译:医用超声探头的设计:用于表征混响的测量系统

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A measurement system which characterizes the reverberations occurring in medical ultrasound (US) images has been developed. Reverberations cause multiple copies of anatomical structure interfaces, degrading image quality, accuracy and leading to potential misdiagnosis. The system is suitable for characterizing the reverberations during design phase of US probes and for investigating the root causes of these distortions that influence the medical images. The system, based on non-destructive evaluation of the materials, is implemented by means of an ad hoc measurement chain, in which a silicone membrane specially designed to generate reverberations, replicates the same acoustic properties of human skin. The experimental setup based Time of Flight (ToF) of the echoes allows for detecting the reverberation source in the US probe acoustic stack. The proposed quantitative approach can help to predict US probe performances during design stage becoming very useful during imaging validation. Accurate description of the ultrasonic transmit-receive measurement system is discussed by taking into account different material, geometry and thickness of the layers involved in the US probe. Experimental results show that the implemented system can detect the root cause of reverberations by accurately quantifying the layer source providing imaging distortion.
机译:已经开发出表征在医学超声(US)图像中发生的混响的特征的测量系统。混响会导致解剖结构界面的多个副本,从而降低图像质量,准确性并导致潜在的误诊。该系统适用于表征US探头设计阶段的混响以及调查影响医学图像的这些失真的根本原因。该系统基于对材料的非破坏性评估,通过一条临时测量链实施,在该链中,专门设计用来产生混响的硅膜可复制人类皮肤的相同声学特性。基于实验设置的回声飞行时间(ToF)允许检测US探头声学堆栈中的混响源。所提出的定量方法可以帮助预测设计阶段的美国探头性能,在成像验证期间变得非常有用。超声波发射-接收测量系统的准确描述是通过考虑US探头所涉及的层的不同材料,几何形状和厚度来进行讨论的。实验结果表明,所实现的系统可以通过准确量化提供成像失真的层源来检测混响的根本原因。

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