光学技术, 2006, 32 (2): 0284, 网络出版: 2010-06-03
一种新的二维CT扫描方式及其重建算法
New scan mode for 2D-CT and its reconstruction algorithm
摘要
介绍了一种二维CT扫描方式及其重建算法。它是一种利用近轴X光线,针对大型回转试件的二维CT检测方法。被扫描试件依次绕与探测器平行的多个旋转中心各旋转一周。在旋转过程中,射线源在周向均布的多个角位置发射射线,同时探测器接收射线并记录投影数据。同传统的二代CT相比,对一个具体例子的计算表明,它可以节约3/4的扫描时间。计算机仿真表明了这种扫描方式和重建算法的可行性。
Abstract
A 2D-CT scan mode and its reconstruction algorithm,which can scan large-sized work pieces are introduced with paraxial X-ray beam. Work pieces to be tested were in turn rotated a circle by centers,which lined up parallel to the detector. During rotation,X-ray was at circumferentially equi-spaced positions,and data were saved at the same time. Comparing with the second generation scan mode by an example,it can save the scan time about 3/4.The computer simulation indicates the possibility of this scan mode and its reconstruction algorithm.
赵飞, 路宏年, 孙翠丽. 一种新的二维CT扫描方式及其重建算法[J]. 光学技术, 2006, 32(2): 0284. ZHAO Fei, LU Hong-nian, SUN Cui-li. New scan mode for 2D-CT and its reconstruction algorithm[J]. Optical Technique, 2006, 32(2): 0284.