| 基于变螺距螺旋FDK重建算法的研究 |
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| 引用本文： | 蔚慧甜,杨海,薛迎,王慧敏.基于变螺距螺旋FDK重建算法的研究[J].电子测试,2011(7):8-10,15. |
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| 作者姓名： | 蔚慧甜 杨海 薛迎 王慧敏 |
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| 作者单位： | 1. 中北大学信息探测与处理技术研究所,太原,030051
2. 中北大学,理学院,太原,030051 |
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| 基金项目： | 国防重点实验室基金项目资助(9140c1204040908) |
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| 摘 要： | 目前广泛应用的锥束螺旋CT主要采用螺旋FDK算法进行图像重建,但为了使算法能更应用于实际,许多学者对标准的螺旋轨迹进行了拓展.本文主要研究了变螺距螺旋扫描轨迹.变螺距螺旋扫描可以提高扫描速度,有更高的时间、空间分辨率.本文详细介绍了变螺距螺旋扫描轨迹,给出了具体的变螺距螺旋扫描轨迹方程.针对图像重建,本文主要从FDK重...
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| 关 键 词： | 变螺距螺旋扫描 FDK重建算法 滤波反投影 |
FDK Reconstruction algorithm for variable pitch helical cone-beam CT |
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| Yu Huitian,Yang Hai,Xue Ying,Wang Huiming.FDK Reconstruction algorithm for variable pitch helical cone-beam CT[J].Electronic Test,2011(7):8-10,15. |
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| Authors: | Yu Huitian Yang Hai Xue Ying Wang Huiming |
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| Affiliation: | Yu Huitian1,Yang Hai1,Xue Ying1,Wang Huiming2 (1 Institute of Signal Capturing & Processing Technology,North University of China,Taiyuan 030051,2 College of Science North University of China,Taiyuan 030051 ) |
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| Abstract: | At present, FDK algorithm is widely used for image reconstruction of cone-beam spiral CT. But we want the algorithm can be applied to make the practice, many other non-standard spiral trajectory had been proposed. In this paper, we mainly studied the variable pitch spiral cone-beam CT scan. Variable pitch helical scan can improve the scanning speed, and have higher time and space resolution. We described a variable pitch spiral scan detailed and gave a specific equation of variable pitch helical scanning. F... |
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| Keywords: | variable pitch helical scan FDK reconstruction algorithm filtered backprojection |
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