Abstract In an industrial field, non-destructive testing (NDT) is commonly used to inspect industrial products. Among NDT methods using radiation sources, X-ray laminography has several advantages, such as high depth resolution and low computational costs. Moreover, an X-ray laminography system with stationary source array and compact detector is able to reduce mechanical motion artifacts and improve inspection efficiency. However, this system, called stationary inverse-geometry X-ray laminography (s-IGXL), causes truncation artifacts in reconstructed images due to limited fields-of-view (FOVs). In this study, we proposed a projection data correction (PDC) method to reduce the truncation artifacts arisen in s-IGXL images, and the performance of the proposed method was evaluated with the different number of focal spots in terms of quantitative accuracy. Comparing with conventional techniques, the PDC method showed superior performance in reducing truncation artifacts and improved the quantitative accuracy of s-IGXL images for all the number of focal spots. In conclusion, the PDC method can improve the accuracy of s-IGXL images and allow precise NDT measurements.

中文翻译：

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用于无损检测的静止逆几何 X 射线层析成像中减少截断伪影的方法的开发

摘要 在工业领域，无损检测（NDT）常用于检测工业产品。在使用辐射源的 NDT 方法中，X 射线层析成像具有多个优点，例如深度分辨率高和计算成本低。此外，具有固定源阵列和紧凑型探测器的 X 射线层析成像系统能够减少机械运动伪影并提高检测效率。然而，这种称为静止逆几何 X 射线层析成像 (s-IGXL) 的系统会由于视场 (FOV) 有限而导致重建图像中出现截断伪影。在这项研究中，我们提出了一种投影数据校正（PDC）方法来减少 s-IGXL 图像中出现的截断伪影，并在定量精度方面用不同数量的焦点来评估所提出方法的性能。与传统技术相比，PDC 方法在减少截断伪影方面表现出优异的性能，并提高了所有焦点数量的 s-IGXL 图像的定量准确性。总之，PDC 方法可以提高 s-IGXL 图像的准确性并允许精确的 NDT 测量。