Journal of Radiation Industry (방사선산업학회지)

Korean Society of Radiation Industry (한국방사선산업학회)
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The Evaluation of Spatial Resolution of Stationary-gantry Sparse-view CT Security-screening System

고정형(Stationary-gantry) 희소뷰(Sparse-view) CT 보안검색시스템의 공간분해능 평가

  • Received : 2023.10.31
  • Accepted : 2023.11.29
  • Published : 2023.12.31
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Abstract

In this study, the image quality assessment, especially spatial resolution evaluation, for Sparse-view CT reconstructed images was performed. The main goal of the experiment is to evaluate Modulation Transfer Function by using American Standard Method for Measurement of Computed Tomography System Performance(ASTM E1695-95) which uses the edge test object. To compare with the ASTM method, a different method, the radial-type edge profile, to measure MTF using the edge method also performed. Both approaches were tested on the same image acquired by the stationary-gantry sparse-view CT security-screening system using cylindrical test phantom manufactured in accordance with ANSI 42.45. Both of the spatial resolutions at 10% modulation are 0.195, 0.203lp pixel-1, respectively. The method implemented by ASTM E1695-95 showed higher reliability and had a relatively more accurate spatial resolution result than the radial-type edge profile method.

Keywords

Acknowledgement

본 연구는 국토교통부 지능형 휴대수하물 보안검색 기술개발사업의 연구비 지원(RS-2021-KA162822)에 의해 수행되었습니다.

References

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