Nuclear Engineering and Technology

Korean Nuclear Society (한국원자력학회)
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Development of a truncation artifact reduction method in stationary inverse-geometry X-ray laminography for non-destructive testing

  • Kim, Burnyoung (Department of Medical Science, Konyang University) ;
  • Yim, Dobin (Department of Medical Science, Konyang University) ;
  • Lee, Seungwan (Department of Medical Science, Konyang University)
  • Received : 2020.06.05
  • Accepted : 2020.11.23
  • Published : 2021.05.25
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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.

Keywords

Acknowledgement

This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science and ICT (Grant No. NRF- 2019R1C1C1007833).

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