Sponheim N, Johansen I
Norwave Development A.S, Lysaker, Norway.
Ultrason Imaging. 1991 Jan;13(1):56-70. doi: 10.1177/016173469101300103.
This paper describes an experimental study in diffraction tomography whose main goal was to determine experimentally the performance of the filtered backpropagation algorithm in ultrasound tomography. We have built a simple water tank with a plane wave source and a scanning hydrophone. The test objects have been cylindrical and of a relatively simple structure and made of acrylic and silicone rubber. The resulting reconstructions show that the structure and position of the objects are well reproduced. The velocity of the objects can also be well reproduced if the velocity contrast is not too large. In medical imaging, it is most important to see the structure, and since the velocity change in biological tissue is small, the method should be well suited for medical imaging.
本文描述了一项衍射层析成像的实验研究，其主要目的是通过实验确定滤波反传播算法在超声层析成像中的性能。我们搭建了一个带有平面波源和扫描水听器的简单水箱。测试对象为圆柱形，结构相对简单，由丙烯酸和硅橡胶制成。所得重建结果表明，物体的结构和位置得到了很好的再现。如果速度对比度不是太大，物体的速度也能得到很好的再现。在医学成像中，看清结构是最重要的，而且由于生物组织中的速度变化很小，该方法应该非常适合医学成像。
