期刊文献+

等角扇形束投影的CT重建算法研究 预览 被引量:3

CT Reconstruction Algorithm from Equiangular Fan Beam Projections
在线阅读 下载PDF
收藏 分享 导出
摘要 通过线阵探测器CT系统CD-300BX获得C/C复合材料多个角度下的扇形束cT扫描投影数据,设计并实现了滤波反投影算法。讨论了常用滤波函数和内插方式对CT重建质量的影响,采用峰值信噪比和平均梯度对cT图像重建质量进行客观评价,并与cT系统算法重建结果进行对比。研究结果表明:选用R-L滤波和紧邻内插时CT图像重建质量最好,本文开发的滤波反投影算法重建质量达到了cT系统的重建质量,可满足扇形束投影的cT重建需求。 Fan beam projection data of C/C composite from multiple angles were acquired by CT system with linear array detector which named CD - 300BX, and filtered backprojection algorithm was designed and implemented. The effects of classical filtering functions and interpolation functions on CT reconstruction quality were discussed, the qualities of CT images were evaluated objectively by peak signal to noise ratio and mean gradient, and compared with reconstruction algorithm of CT system. Experiments results show that the quality of CT images is the best in case of R-L filtering function and nearest neighbor interpolation function, the quality of CT image reconstructed in this paper has reached the quality of CT system, which will meet the requirement of CT reconstruction for fan beam projections.
作者 敖波 曾亚斌 吴伟 金信鸿 祝忆春 AO Bo1, ZENG Ya-bin1 , WU Wei1 , JIN Xin-hong1 , ZHU Yi-chun2 (1. Key Laboratory of Nondestructive Testing ( Nanehang Hangkong University), Ministry of Education, Nanehang 330063, China; 2. China United Network Communications Limited, Jiangxi Province Branch, Nanchang 330096, China)
出处 《失效分析与预防》 2013年第4期206-211,共6页 Failure Analysis and Prevention
基金 航空科技重点实验室开放基金(ZH201129001) 江西省教育厅科技项目(GJJ10533)
关键词 滤波反投影 扇形束投影 滤波函数 CT 平均梯度 filtered backprojection fan beam projection filtering function computed tomography mean gradient
作者简介 敖波(1979年-),男,博士,副教授,主要从事射线成像检测等方面的研究。
  • 相关文献

参考文献10

  • 1张朝宗著..工业CT技术和原理[M].北京:科学出版社,2009:188.
  • 2[美]JiangHsieh.计算机断层成像技术原理、设计、伪像和进展[M].张朝宗,郭志平,王贤刚,等译.北京:科学出版社,2006:3-12. 被引量:1
  • 3Kak A C, Slaney M. Principles of computerized tomographic imaging[ M ]. IEEE Press, 1999:49 - 92. 被引量:1
  • 4Herman G T. Fundamentals of compurized tomography:imagereconstruction from projections[ M]. Springer,2009:1 -26. 被引量:1
  • 5张聪哲,李晓苇,杨昆.扇束等角型CT与等距型CT的比较研究[J].CT理论与应用研究,2013(2):215-223. 被引量:2
  • 6Li H J. X-ray chest image reconstruction by radon transform simulation with fan-beam geometry[ J ]. Measurement, 2010,43 : 447 - 453. 被引量:1
  • 7Yang M, Pan J, Zhang J H, et al. Center of rotation automatic measurement for fan-beam CT system based on sinogram image features [ J]. Neurocomputing, 2013, http://dx, doi. org/10. 1016/j. neucom. 2012.08. 066. 被引量:1
  • 8张斌..滤波反投影图像重建算法中插值和滤波器的研究 [D].中北大学,2009:
  • 9庄天戈.CT理论与算法[M].上海:上海交通大学出版社,1992.. 被引量:9
  • 10张顺利,李卫斌,唐高峰.滤波反投影图像重建算法研究[J].咸阳师范学院学报,2008,23(4):47-49. 被引量:16

二级参考文献17

  • 1基于卷积反投影CT重建的一种新型实用滤波函数[J].CT理论与应用研究,2000(z1):29-32. 被引量:4
  • 2曾更生.医学图像重建入门[M].北京:高等教育出版社,2009. 被引量:4
  • 3高上凯.医学成像系统[M].北京:清华大学出版社;1999. 被引量:2
  • 4谷荻隆嗣.数字滤波器与信号处理[M].北京:科学出版社,2003. 被引量:4
  • 5L.A. Shepp and B.F. Logan. The fourier reconstruction of a head section [J]. IEEE Tram Nucl Sci., 1974, 21:21-43. 被引量:1
  • 6Kak AC, Slaney M. Principles of computerized tomographic imaging[M]. Society of Industrial and Applied Mathematics, 2001: i. 被引量:1
  • 7Gabor T. Herman and abraham naparstek, fast image reconstruction based on a formula appropriate for rapidly collected data[J]. SIAM Journal on Appli 1977, 33: 511-533. 被引量:1
  • 8Lakshminarayanan AV. Reconstruction from divergent ray data[R]. Departm Science, State University of New York at Buffalo, Technical Report, 1975 radon inversion ed Mathematics, ent of Computer : 92. 被引量:1
  • 9谢强.计算机断层成像技术[M].2006:55-63. 被引量:1
  • 10Dreike P, Graphics Gullberg Computer Besson G. Problems, Horn BKP. Chen GH. Boyd DP. Convolution reconstruction techniques for divergent beams[J]. Computer and Image Processing, 1976, 5: 459-469. 被引量:1

共引文献23

同被引文献13

引证文献3

二级引证文献2

投稿分析

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部 意见反馈