| 基于GPU实现的数字合成X射线体层成像投影数据的模拟方法 |
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| 引用本文： | 闫天峰,孙岩,孙怡.基于GPU实现的数字合成X射线体层成像投影数据的模拟方法[J].CT理论与应用研究,2011,20(1):1-10. |
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| 作者姓名： | 闫天峰 孙岩 孙怡 |
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| 作者单位： | 大连理工大学信息与通信工程学院,辽宁,大连,116023 |
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| 基金项目： | 国家自然科学基金，辽宁省优秀人才基金 |
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| 摘 要： | 数字合成X射线体层成像技术能利用有限角度下的投影数据重建物体任意断层的图像.在数宁合成X射线体层成像重建算法研究中,模拟投影数据是重要的步骤,本文提出了一种基于GPU光线投射算法的数字合成X射线体层成像投影数据模拟方法.比较传统CPU模拟手段,GPU模拟方法计算速率快,且基于硬件支持的三线性插值能够得到更加接近实际的投...
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| 关 键 词： | Tomosynthesis 投影数据模拟 光线投射算法 GPU |
Tomosynthesis Projection Simulation Based on GPU |
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| YAN Tian-feng,SUN Yan,SUN Yi.Tomosynthesis Projection Simulation Based on GPU[J].Computerized Tomography Theory and Applications,2011,20(1):1-10. |
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| Authors: | YAN Tian-feng SUN Yan SUN Yi |
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| Institution: | School of Information and Communication Engineering, Dalian University of Technology,Dalian 116023,China |
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| Abstract: | Tomosynthesis can reconstruct any sectional image of object using limited angle projection. Before the research of reconstruction method,projection simulation is an important step,this paper proposed a projection simulation method based on GPU Raycasting algorithm. Comparing to CPU simulation method,GPU simulation method is faster in calculation and much closer to the practical projection based on hardware-based trilinear interpolation. This paper simulates projection using traditional CPU method and GPU method respectively,reconstructs the projections above by ART algorithm and Wavelet-Galerkin algorithm and achieves good results. |
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| Keywords: | Tomosynthesis GPU |
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