| 螺旋轨迹Shepp-logan模型的投影仿真 |
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| 引用本文： | 薛迎,王勃,蔚慧甜,刘子龙,郑源彩.螺旋轨迹Shepp-logan模型的投影仿真[J].传感器世界,2011,17(2):12-15. |
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| 作者姓名： | 薛迎 王勃 蔚慧甜 刘子龙 郑源彩 |
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| 作者单位： | 中北大学电子测试技术国家重点实验室,山西太原,030051 |
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| 基金项目： | 国家自然科学基金项目，山西省自然科学基金 |
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| 摘 要： | 锥束螺旋CT是现代CT 领域内一个活跃的研究方向.为了验证三维CT 重建算法的有效性和准确性,研究仿真模型的投影数据是十分必要的.本文首先利用解析几何和求解二次方程的方法推导了螺旋轨迹扫描下的锥束射线投影仿真公式,给出3D Shepp-Logan头部模型在不同螺距下的投影仿真结果.其次,采用Katsevich方法实现了...
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| 关 键 词： | 螺旋CT 投影数据 3D Shepp-Logan头部模型 投影仿真公式 |
Projection simulation of three-dimension Shepp-Logan head phantoms on spiral orbits |
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| XUE Ying,WANG Bo,WEI Hui-tian,LIU Zi-long,ZHENG Yuan-cai.Projection simulation of three-dimension Shepp-Logan head phantoms on spiral orbits[J].Sensor World,2011,17(2):12-15. |
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| Authors: | XUE Ying WANG Bo WEI Hui-tian LIU Zi-long ZHENG Yuan-cai |
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| Affiliation: | XUE Ying,WANG Bo,WEI Hui-tian,LIU Zi-long,ZHENG Yuan-cai (North University Of China,Taiyuan 030051,China) |
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| Abstract: | Cone beam of spiral CT is an active researching direction in modern CT field.In order to verify the effectiveness and precision of three-dimension reconstruction algorithm,it is very necessary to research the projection data of simulation models.Firstly,the projection simulation formulas of cone beams are derived under the spiral scanning by using the method of analytic geometry and solving quadratic equations,and the projection simulation results of 3D Shepp-Logan head phantoms are given in different spira... |
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| Keywords: | spiral CT projection data 3D Shepp-Logan head phantom projection simulation formula |
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