차트 각도를 이용한 해상력 특성 평가

• 영문명: Evaluation of Resolution Characteristics by Using Chart Device Angle
• 발행기관: 대한방사선과학회(구 대한방사선기술학회)
• 저자명: 민정환(Jung-Whan Min) 정회원(Hoi-Woun Jeong)
• 간행물 정보: 『방사선기술과학』방사선기술과학 제44권 제4호, 375~380쪽, 전체 6쪽
• 주제분류: 의약학 > 방사선과학
• 파일형태: PDF
• 발행일자: 2021.08.30

영문 초록

This study aim was quantitative assessment of MTFs of spectrum of the square wave chart images and Coltman chart images for 0o, 1.7o, 2.2o, 2.9o, 4.1o 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∼3o.

목차

Ⅰ. 서 론

Ⅱ. 연구대상 및 방법

Ⅲ. 결 과

Ⅳ. 고 찰

Ⅴ. 결 론

REFERENCES

키워드

차트 각도 변조전달함수 품질보증 국제전자기술위원회 후지타 방법 Chart device angle Modulation transfer function Quality assurance International electro-technical commission standard Fujita method