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扇束等角型CT与等距型CT的比较研究 被引量:2

The Comparative Study of Equiangular Fan-beam CT and Equidistant Fan-beam CT
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摘要 扇束CT分为等角射线型和等距射线型两种结构。由于探测器单元排列方式不同,两者在数据采集和重建时都存在一些区别,从而导致重建图像质量有一定差异。方法:本文对两种扇束CT的结构及对应的滤波反投影重建算法做了简单介绍并比较其中存在的差异。使用Shepp-Logan模型及自建模型分别对两种扇束CT进行投影采集及重建图像的模拟,并对重建图像的质量进行比较。结论:在相同几何参数条件下,等角型CT重建图像的质量会略优于等距型CT。 Fan-beam CT can be divided into equiangular CT and equidistant CT. For the detector unit arranged in different ways, there are some differences in data acquisition and reconstruction, which resulting in different reconstruction results. An introduction to the two kind of fan-beam CT based on filter back projection reconstruction algorithm. Using Shepp-Logan phantom to simulate and compare the reconstruction image.
出处 《CT理论与应用研究(中英文)》 2013年第2期215-223,共9页 Computerized Tomography Theory and Applications
基金 国家重大科学仪器设备开发专项项目(2011YQ030114) 973计划(2011CB707500) 国家自然科学基金(11104058) 河北省自然科学基金(A2011201155)
关键词 扇束CT FBP算法 扇束等角CT 等距CT fan-beam CT FBP equiangular fan-beam CT equidistant fan-beam CT
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参考文献11

  • 1Kak AC, Slaney M. Principles of computerized tomographic imaging[M]. Society of Industrial and Applied Mathematics, 2001: i.
  • 2Gabor 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.
  • 3Lakshminarayanan 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.
  • 4谢强.计算机断层成像技术[M].2006:55-63.
  • 5傅健,路宏年,张全红.扇束工业CT重建算法速度优化[J].CT理论与应用研究(中英文),2002,11(3):16-19. 被引量:11
  • 6Dreike 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.
  • 7GT. The reconstruction of fan-beam data by filtering the back-projection[J] Graphics and Image Processing, 1979, i0: 30-47.
  • 8CT fan-beam parameterizations leading to shift-invariant filtering[J]. Inverse 1996, 12: 815-833.
  • 9Fan-beam reconstruction methods[J]. Proceedings of the IEEE, 1979, 67: 1616-1623.
  • 10A new framework of image reconstruction from fan-beam projections[J]. MedicalPhysics, 2003, 30: 1151-1161.

二级参考文献3

共引文献13

同被引文献11

  • 1庄天戈.CT理论与算法[M].上海:上海交通大学出版社,1992..
  • 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.
  • 3Kak A C, Slaney M. Principles of computerized tomographic imaging[ M ]. IEEE Press, 1999:49 - 92.
  • 4Herman G T. Fundamentals of compurized tomography:imagereconstruction from projections[ M]. Springer,2009:1 -26.
  • 5Li H J. X-ray chest image reconstruction by radon transform simulation with fan-beam geometry[ J ]. Measurement, 2010,43 : 447 - 453.
  • 6Yang 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.
  • 7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:19
  • 8李兴东,杨民,李德红,刘文丽.一种改进的三维CT系统射线源焦点投影坐标测量方法[J].光学学报,2011,31(12):112-116. 被引量:1
  • 9韩双明,白秀英.Einstein旋转圆盘几何性质的研究[J].渭南师范学院学报,2012,27(12):46-48. 被引量:1
  • 10敖波,曾亚斌,吴伟,金信鸿,祝忆春.等角扇形束投影的CT重建算法研究[J].失效分析与预防,2013,8(4):206-211. 被引量:3

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