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针对小动物的锥束CT重建的研究及验证 被引量：4

Investigation and Validation of the Reconstruction Algorithm for Small Animal Cone-beam CT Imaging
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摘要 基于经典3D Shepp-Logan模型,应用射线追踪和射线衰减定律得到锥束CT的模拟仿真数据.利用FDK三维重建算法实现锥束CT图像重建,采用仿真图像对重建算法进行了验证,通过搭建的锥束CT系统和自制仿体进行了层析成像和图像重建.结果表明:算法可较为准确地重建出原物体的空间分布和密度关系,针对仿真数据的中心断层重建图像的空间分辨率可达到8lp/mm. Simulation for cone beam CT system and the 3D Shepp-Logan Model is carried out.FDK reconstruction algorithm is developed to reconstruct the images and then evaluated with the 3D Shepp-Logan Mode.Experiments are carried out on a constructed cone beam CT system and a homemade phantom.Simulation and experimental reconstruction results indicate that reconstruction algorithm can faithfully provide both the position and relative contrast of the inner objects.The spatial resolution of the central image from simulation data can reach 8 linepairs/mm.
作者 缪辉 王秋殷 赵会娟 王婷婷 高峰
机构地区 天津大学精密仪器与光电子工程学院
出处 《光子学报》 EI CAS CSCD 北大核心 2010年第9期1588-1593,共6页 Acta Photonica Sinica
基金 国家自然科学基金(30870657) 天津市重点基金(09JCZDC18200) 国家重点基础研究发展规划(2006CB705700)资助
关键词 锥束CT 重建算法 FDK Cone-beam CT Reconstruction algorithm FDK
分类号 TP391.41 [自动化与计算机技术—计算机应用技术]
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参考文献10

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二级参考文献15

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共引文献15

同被引文献39

  • 1祝海江,吴福朝.基于一组对应消失线的度量重建[J].软件学报,2004,15(5):666-675. 被引量：3
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引证文献4

二级引证文献15

光子学报
2010年 第9期

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