Improvement of non-contact measurement of propagation characteristics in tissues using pass-through airborne ultrasound
Improvement of non-contact measurement of propagation characteristics in tissues using pass-through airborne ultrasound
复制标题
使用直通机载超声波改进组织中传播特性的非接触式测量
DOI：
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发表时间：
2016
期刊：
影响因子：
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通讯作者：
H. Hachiya
中科院分区：
文献类型：
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作者：
S. Hirata;Koichi Terashima;H. Hachiya
测量和评价松质骨内超声传播特性是骨质疏松症的诊断方法之一。提出了一种利用机载超声穿过鞋跟进行鞋跟传播特性非接触测量的方法。由于在空气和鞋跟表面之间的边界处有很大的反射，穿透超声波被极大地衰减。因此，在所提出的方法中，通过使用高阶m序列的脉冲压缩大大提高了透通超声的信噪比。此外，穿透超声在边界处也会发生弯曲。因此，超声波光束的方向取决于鞋跟的形状。本文描述了一种考虑边界弯曲的穿透超声接收方法。
Measurement and evaluation of ultrasonic propagation characteristics in cancellous bone is one of the diagnosis methods of osteoporosis. Non-contact measurement of propagation characteristics in a heel using airborne ultrasound which passed through the heel has been proposed. The pass-through ultrasound is extremely attenuated due to large reflections at boundaries between air and heel surfaces. In the proposed method, therefore, the signal-to-noise ratio of the pass-through ultrasound is greatly improved by pulse compression using an higher-order M-sequence. Furthermore, the pass-through ultrasound also inflects at the boundaries. Therefore, the direction of the ultrasonic beam varies depending on the shape of the heel. In this paper, a method for reception of the pass-through ultrasound by considering inflections at the boundaries is described.
超声波在松质骨和皮质骨中的传播：毕奥理论对一些实验结果的预测。
DOI：
10.1121/1.402637
发表时间：
1992
期刊：
The Journal of the Acoustical Society of America
影响因子：
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作者：
Williams,JL
通讯作者：
Williams,JL