Tomography from diffuse waves: Passive shear wave imaging using low frame rate scanners
Tomography from diffuse waves: Passive shear wave imaging using low frame rate scanners
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DOI：
10.1063/1.4812515
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发表时间：
2013-07-01
影响因子：
4
通讯作者：
Chapelon, J. -Y.
中科院分区：
文献类型：
--
作者：
Catheline, S.;Souchon, R.;Chapelon, J. -Y.
提出了一种从复杂场的局部测量中提取波长层析成像的方法。与近年来在地震学或超声波中发展起来的噪声相关技术相比，现场测量是欠采样的，这为慢速成像设备的应用打开了大门。通过仿真和实验，证明了场测量的时间和/或空间相干性的损失不是层析成像重建的障碍。我们提出了一个在横波成像中的应用：在一个医疗幻影和一个健康志愿者的甲状腺中测试了一个工作在25赫兹的传统超声波扫描仪。(C) 2013 AIP出版有限责任公司
We present an approach to extract from the local measurement of a complex field a wavelength tomography. In contrast with noise correlation techniques developed in recent years in seismology or ultrasound, field measurement is under-sampled which opens applications to slow imaging devices. Through simulations and experiments, it is demonstrated that the loss of time and/or spatial coherence of the field measurement is not an obstacle for tomography reconstruction. We present an application in shear wave imaging: a conventional ultrasonic scanner working at 25 Hz is tested in a medical phantom and in the thyroid of a healthy volunteer. (C) 2013 AIP Publishing LLC.