The Fast Location Methods of Scatters in the Virtual Phased Array Ultrasonic Scattering CT Imaging
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摘要: 提出了一种利用时空压缩的方法,将虚拟相控阵所得到的超声阵列信号集(波列),变换为位置-时间的二维灰度图,再将其投影到时间轴上。通过研究一维灰度投影的特征,实现快速识别是否存在散射界面,并确定散射面产生的信号在时间轴上粗略位置。Abstract: A time-space compression method was proposed, which made ultrasonic array signals(wave train) received by virtual phased array transform to two-dimensional grayscale of time-location, and then project to time axis. By studying the characteristics of one-dimensional projection, the existence of scattering interface was quickly identified, and the coarse position of scattering interfaces on the timeline could also be identified.
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Keywords:
- Phased array /
- Ultrasonic CT /
- Scattering /
- Fast location
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