Journal of radiological science and technology (대한방사선기술학회지:방사선기술과학)

Korean Society of Radiological Science (대한방사선과학회)
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A Study on the Characteristics of Computerized Tomographic X-Ray Film

CT X선용(線用)필름의 특성(特性) 연구(硏究)

  • Lee, Man-Koo (Dept. of Radiotechnology, WonKwang Public Health Junior College) ;
  • Kang, Se-Sik (Dept. of Radiotechnology, WonKwang Public Health Junior College) ;
  • Lee, Jae-Wan (Dept. of Radiotechnology, WonKwang Public Health Junior College)
  • 이만구 (원광보건전문대학 방사선과) ;
  • 강세식 (원광보건전문대학 방사선과) ;
  • 이재완 (원광보건전문대학 방사선과)
  • Published : 1987.12.20
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Abstract

This thesis compared and analyzed the characteristics, centered on a characteristic curve, about X-ray computerized tomographic film generally used in Korea recently. The results were as follows: 1. Maximum gradient (gamma) was film A-2.19, film B-2.00, film C-1.92. 2. Latitude was confined within the limits of density 0.6-2.0 in all. 3. When we changed window center from 0 to 40, the difference of density, which was in 1.0, was film A-0.12, film B-0.16, fil m C-0.14. 4. When we changed window width from 0 to 500, the difference of density, which was in 1.0, was film A-0.06, film B-0.08, film C-0.05. 5. In the case of window width 50 and window center 20, latitude was 0.5-2.0, 0.5-2.2, 0.5-1.9 and gamma value was 1.74, 1.82, 1.72 respectively, 6. In the case of window width 80 and window center 30, latitude was 0.6-2.2, 0.6-2.3, 0.8-2.2 and gamma value was 2.0, 2.13, 1.95 respectively.

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