| 再论"非圆轨迹不含导数的扇形束扫描重建公式" |
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| 引用本文： | 王革.再论"非圆轨迹不含导数的扇形束扫描重建公式"[J].CT理论与应用研究,2003,12(2):39-44. |
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| 作者姓名： | 王革 |
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| 作者单位： | DepartmentsofRadiology,BiomedicalEngineering,MathermaticsUniversityofIowa,IowaCity,IA52242,USA |
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| 基金项目： | This work was supported in part by the NIH grant R01，DC03590， |
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| 摘 要： | 黄朝志等发现在1993年发表的非圆轨迹不含导数的扇束重建公式推导中的一个错误。他们的结论是：在假设的条件下，不含导数的重建公式不是精确的，但是一个很好的近似重建公式。在本文中，作者分析了该错误的影响，讨论了用于非圆轨迹不含导数的精确扇束重建的矫正办法，并提出了一些未解决问题。
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| 关 键 词： | CT 图像重建 扇束 锥束 Feldkamp型算法 |
Revisit to Derivative-Free Noncircular Fan-Beam Reconstruction-Responses to "Discussions on a Noncircular Fan-Beam Reconstruction Formula" by Huang, et al. |
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| Ge Wang.Revisit to Derivative-Free Noncircular Fan-Beam Reconstruction-Responses to "Discussions on a Noncircular Fan-Beam Reconstruction Formula" by Huang, et al.[J].Computerized Tomography Theory and Applications,2003,12(2):39-44. |
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| Authors: | Ge Wang |
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| Abstract: | Huang et al. identified an error in the derivation of a derivative-free noncircular fan-beam reconstruction formula published in 1993. They concluded that the derivative-free formula is not exact under the assumed conditions, but it is a very good approximate reconstruction formula. In this report, the author analyzes the impacts of that error, discuss on remedy for exact derivative -free noncircular fan-beam reconstruction, and pose some open questions. |
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| Keywords: | Computed tomography (CT) image reconstruction fan-beam cone-beam Feldkamp-type algorithm |
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