| 锥束CT扫描方式对ART算法图像重建的影响研究 |
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| 引用本文： | 伍建辉,李公平,周龙,潘小东,林俏露.锥束CT扫描方式对ART算法图像重建的影响研究[J].核技术,2011(10):759-764. |
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| 作者姓名： | 伍建辉 李公平 周龙 潘小东 林俏露 |
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| 作者单位： | 兰州大学核科学与技术学院; |
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| 摘 要： | 平板探测器锥束CT的扫描方式对ART(Algebraic Reconstruction Techniques)算法图像重建会产生影响.本文用128×128×128三维Shepp-Logan头部模型作为仿真对象,探讨了不同源-扫描中心距离、投影数、缺角度下扫描方式对图像重建的影响.结果表明,源-扫描中心距离与扫描中心-探...
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| 关 键 词： | 锥束CT 扫描方式 ART算法 三维Shepp-Logan头部模型 图像重建质量 |
Effect of scanning mode of cone beam CT on the image reconstruction of ART algorithm |
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| WU Jianhui LI Gongping ZHOU Long PAN Xiaodong LIN Qiaolu.Effect of scanning mode of cone beam CT on the image reconstruction of ART algorithm[J].Nuclear Techniques,2011(10):759-764. |
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| Authors: | WU Jianhui LI Gongping ZHOU Long PAN Xiaodong LIN Qiaolu |
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| Affiliation: | WU Jianhui LI Gongping ZHOU Long PAN Xiaodong LIN Qiaolu(School of nuclear science and technology,Lanzhou University,Lanzhou 730000,China) |
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| Abstract: | Cone beam computed tomography(CT) based on flat detector has interested many CT researchers.Different CT scanning modes have different effect on ART image reconstruction.In this paper,using a 128 ? 128 ?128 3D Shepp-Logan head model as the object of simulation,impacts on image reconstruction are studied with different geometries of the radiation source,scanning center and detectors;different number of projections;and different scanning modes under fixed projections.An object to which scans cannot be done at... |
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| Keywords: | Cone beam CT Scanning mode ART algorithm 3D Shepp-Logan head model Quality of reconstructed image |
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