Sponheim N, Gelius L J, Johansen I, Stamnes J J
Norwave Development AS, Lysaker, Norway.
Ultrason Imaging. 1994 Jan;16(1):19-32. doi: 10.1177/016173469401600102.
In this paper, quantitative tomographic reconstructions of biological tissue are presented. First, the experimental setup and a hybrid filtered backpropagation (FBP) technique are briefly described. Using this technique, which includes exact backpropagation of data prior to reconstruction by means of the classical FBP algorithm, quantitative velocity maps of relatively large biological objects can be obtained. Since the FBP algorithm is based on a first-order scattering approximation, the deteriorating effects of higher-order scattering in diffraction tomography are also discussed. The higher-order scattering limits the size of the biological object to a few centimeters.
本文介绍了生物组织的定量断层重建。首先，简要描述了实验装置和一种混合滤波反传播（FBP）技术。使用该技术，包括在通过经典FBP算法进行重建之前对数据进行精确的反传播，可以获得相对较大生物物体的定量速度图。由于FBP算法基于一阶散射近似，因此还讨论了衍射断层成像中高阶散射的恶化效应。高阶散射将生物物体的尺寸限制在几厘米以内。
