변조전달함수 방법에서 엣지 장치 설정에 대한 각도 최적화 평가

• 영문명: Evaluation of Angle Optimization on Edge Test Device Setting in Modulation Transfer Function
• 발행기관: 대한방사선과학회(구 대한방사선기술학회)
• 저자명: 민정환(Jung-Whan Min) 정회원(Hoi-Woun Jeong)
• 간행물 정보: 『방사선기술과학』방사선기술과학 제43권 제1호, 15~21쪽, 전체 7쪽
• 주제분류: 의약학 > 방사선과학
• 파일형태: PDF
• 발행일자: 2020.02.29

영문 초록

This study was purpose to evaluation of Modulation Transfer Function in Measurements by using the International electrotechnical commission standard(IEC 62220-1) which were edge device each angle by using edge method. In this study was Aero(Konica, Japan) image receptor which is a indirect Flat panel detector(FPD) was used. The size of matrix 1994 × 2430 (14″× 17″inch) which performed 12 bit processing and pixel pitch is 175 μm. The results of shown as MTF measurements at IEC standard. The amount of data seemed reasonable and at an MTF value of 0.1 the spatial frequencies were 2.56 cycles/mm at an angle of 2.4°. MTF value of 0.5 the spatial frequencies were 1.32 cycles/mm at an angle of 2.4°. This study were to evaluate MTF by setting each angle 2.0°∼2.8° degrees the most effective optimal edge angle and to suggest the quantitative methods of measuring by using IEC.

목차

Ⅰ. 서 론

Ⅱ. 대상 및 방법

Ⅲ. 결 과

Ⅳ. 고 찰

Ⅴ. 결 론

REFERENCES

키워드

해상력특성 국제전자기술위원회 엣지방법 엣지각도 공간주파수 Modulation transfer function International electrotechnical commission standard Edge method Edge angle Spatial frequency