| 一种新的二维CT扫描方式及其重建算法 |
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| 引用本文： | 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):284-286. |
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| 作者姓名： | 赵飞 路宏年 孙翠丽 |
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| 作者单位： | 北京航空航天大学,机械工程及自动化学院,北京,100083 |
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| 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。
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| 关 键 词： | 工业CT 射线检测 扫描 大型试件 |
| 文章编号： | 1002-1582(2006)02-0284-03 |
| 收稿时间： | 2005/1/20 |
| 修稿时间： | 2005年1月20日 |
New scan mode for 2D-CT and its reconstruction algorithm |
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| ZHAO Fei,LU Hong-nian,SUN Cui-li.New scan mode for 2D-CT and its reconstruction algorithm[J].Optical Technique,2006,32(2):284-286. |
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| Authors: | ZHAO Fei LU Hong-nian SUN Cui-li |
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| 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. |
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| Keywords: | industrial CT penetrating radiation tests scanning large-sized work piece |
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