| 低剂量X射线CT重建算法仿真分析 |
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| 引用本文： | 王旭,杨明川,郭庆. 低剂量X射线CT重建算法仿真分析[J]. 通信技术, 2011, 44(5): 146-147,150 |
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| 作者姓名： | 王旭 杨明川 郭庆 |
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| 作者单位： | 哈尔滨工业大学通信技术研究所,黑龙江,哈尔滨,150001 |
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| 摘 要： | 对Shepp-Logan头部图像模型提供的原始图像进行低剂量X射线计算机断层成像（CT,Computed Tomography）平移/旋转扫描,利用所得数据对图像的统计重建算法进行仿真。将仿真结果与传统的滤波反投影重建算法的重建结果进行比较,并分别将两种算法的重建图像与原图像进行比较。通过比较得出,滤波反投影重建算法不能有效重建低剂量CT图像,而统计重建算法重建效果优于前者,能够较好地恢复原图像,从而能够适用于低剂量条件下的CT图像重建。
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| 关 键 词： | 低剂量X-CT重建 统计重建算法 滤波反投影重建算法 |
Simulation and Analysis of Low-dose X-ray CT Reconstruction Algorithms |
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| WANG Xu,YANG Ming-chuan,GUO Qing. Simulation and Analysis of Low-dose X-ray CT Reconstruction Algorithms[J]. Communications Technology, 2011, 44(5): 146-147,150 |
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| Authors: | WANG Xu YANG Ming-chuan GUO Qing |
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| Affiliation: | WANG Xu,YANG Ming-chuan,GUO Qing (Communication Research Center,Harbin Institute of Technology,Heilongjiang Harbin 150001,China) |
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| Abstract: | By using the original data provided by Shepp-Logan head model,simulation on statistical reconstruction algorithm of the image is performed in low-dose X-ray translation/rotation scanning mode.The reconstructed images are compared with those of the filtered back projection algorithm,including the original image.It concludes that the low-dose CT image could not be reconstructed effectively by the filtered back projection reconstruction,while the result of the statistical reconstruction algorithm is much bette... |
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| Keywords: | low-dose X-ray CT reconstruction statistical reconstruction algorithm filtered back projection reconstruction algorithm |
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