Journal of radiological science and technology (대한방사선기술학회지:방사선기술과학)

Korean Society of Radiological Science (대한방사선과학회)
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Evaluation of Resolution Characteristics by Using Chart Device Angle

차트 각도를 이용한 해상력 특성 평가

  • Min, Jung-Whan (Department of Radiological technology, Shingu University) ;
  • Jeong, Hoi-Woun (Department of Radiological Science, Baekseok Culture University)
  • 민정환 (신구대학교 방사선학과) ;
  • 정회원 (백석문화대학교 방사선학과)
  • Received : 2021.06.15
  • Accepted : 2021.08.02
  • Published : 2021.08.31
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Abstract

This study aim was quantitative assessment of MTFs of spectrum of the square wave chart images and Coltman chart images for 0°, 1.7°, 2.2°, 2.9°, 4.1° by using chart method. In general device was AccuRay-650 (DK Medical System, Korea) used, indirect flat panel detector(FPD) Aero (Konica, Japan) used and MATLAB R2019a (MathWorks, USA) used. The result of comparison for each angle of MTF the edge image was highest quantitatively value for MTF finding of showed the best value of 0.1 based on the frequency of 3.5 mm-1, value of 0.1 based on the square wave was frequency of 3.0 mm-1 and value of 0.1 based on the Coltman transform was frequency of 2.4 mm-1. In this study it was significant that the methodology of the international Electro-technical Commission was applied mutandis by using the Fujita method within 2~3°.

Keywords

Acknowledgement

This study was supported by from the Shingu University Industry-Academic Cooperation Foundation Grant 2021.

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