Local reconstruction based on narrow fan-beam CT multi-scan

Computer Engineering and Applications ›› 2008, Vol. 44 ›› Issue (2): 202-204.

• 工程与应用 • Previous Articles Next Articles

Local reconstruction based on narrow fan-beam CT multi-scan

ZOU Yong-ning,WANG Jue,CAI Yu-fang

ICT Research Center，Chongqing University，Chongqing 400044，China

Received:1900-01-01 Revised:1900-01-01 Online:2008-01-11 Published:2008-01-11
Contact: ZOU Yong-ning

基于窄角扇束CT多次扫描的局部重建算法

邹永宁,王珏,蔡玉芳

重庆大学 ICT研究中心，重庆 400044

通讯作者: 邹永宁

Abstract

Abstract: Introduce local scan method of narrow fan-beam industrial CT which is implemented through translation and rotation of source-detector.CT multi-scan local reconstruction algorithm is also provided.Firstly Region Of Interest（ROI） is determined from low-resolution image which is reconstructed by coarse scan，secondly scan the ROI by small step and reconstruct high-resolution image；it improves efficiency of detection and acquires high quality local image，while requiring much less computation.

Key words: CT, local reconstruction, narrow fan-beam, multi-scan

摘要： 介绍了窄角扇束工业CT的局部扫描方法，通过源与探测器的平移加旋转实现扫描；研究了CT多次扫描的局部重建算法，从粗略扫描重建的低分辨率图像中圈定感兴趣区域，再进行小步距扫描，重建出高分辨率的图像；提高了检测效率并且只需要更少的时间就可获取高质量的局部图像。

关键词: CT, 局部重建, 窄角扇束, 多次扫描

ZOU Yong-ning,WANG Jue,CAI Yu-fang. Local reconstruction based on narrow fan-beam CT multi-scan[J]. Computer Engineering and Applications, 2008, 44(2): 202-204.

邹永宁,王珏,蔡玉芳. 基于窄角扇束CT多次扫描的局部重建算法[J]. 计算机工程与应用, 2008, 44(2): 202-204.

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Local reconstruction based on narrow fan-beam CT multi-scan

基于窄角扇束CT多次扫描的局部重建算法

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