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医学CR影像中滤线栅伪影的数字化去噪方法探讨 被引量:1

Methods of Removing the Grid Artifacts in Medical CR Images
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摘要 计算机X线摄影(CR)是应用最为广泛的辅助医学诊断的手段。然而在CR摄影中,有时会产生条状的滤线栅伪影,影响图像质量。重点研究和讨论了各种滤波方法,并对其效果一一作出评价,寻找一种合适的方法既能够去除滤线栅形成的伪影,又能够保留原X光片上的细节和病灶。经过大量实验验证,最终确定的滤波方法效果比较好,具有广泛实际的应用前景。 Computed radiography (CR) is one of the diagnosis. However, there are some strip artifacts in most widely used methods of complementary important the CR Photography. They are the shadows of anti-scattering grid voted in the imaging plate. They affect the pictures' quality. In this paper, we principally discuss the different filters, and evaluate their effects, to find a suitable method to remove the anti-scattering grid artifact, more over retain the details in the original X-ray films. After a large number of experiments, the effect of the method in this paper is better to solve this problem and is useful for the practical application.
作者 张帆 郦佳燕
出处 《电脑开发与应用》 2012年第9期6-8,11,共4页 Computer Development & Applications
关键词 数字X线影像 滤线栅 伪影 傅里叶变换 滤波 CR,anti-scatter grid, artifacts, fourier transform, filter
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参考文献3

  • 1Toshinori MARUYAMA 1,Hideki YAMAMOTO.Elimination of Gridlines in X-ray Image[C]∥I2MTC2008-IEEE International Instrumentation andMeasurement Technology Conference Victoria.Vancouver Island,Canada,2008,(5):12-15.
  • 2Igor N Belykh,Craig W Cornelius.Method forAntiscatter Stationary Grid Artifacts Detection andAttenuation in Digital Radiographic Images[M].arxiv,2006.
  • 3Lin C Y,Lee W J,Chen S J,et al.A Study of GridArtifacts Formation and Elimination in ComputedRadiographic Images[J].Journal of Digital Imaging,2006,19(4):351-361.

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