격자 간섭계에서 탈봇 패턴의 섬광체 스크린 투과 시 전달 특성에 대한 투과 시 전달 특성에 대한

• 영문명: A Simulation Study on the Transfer Characteristics of the Talbot Pattern Through Scintillation Screens in the Grating Interferometer
• 발행기관: 대한방사선과학회(구 대한방사선기술학회)
• 저자명: 김대승(Kim Dae seung) 김영주(Kim Young ju) 이세호(Lee Se ho) 이승욱(Lee Seung Wook)
• 간행물 정보: 『방사선기술과학』방사선기술과학 제42권 제1호, 67~75쪽, 전체 9쪽
• 주제분류: 의약학 > 방사선과학
• 파일형태: PDF
• 발행일자: 2019.02.28

영문 초록

Grating interferometry based imaging technology is a kind of radiation imaging system, which can acquire not only absorption image but also phase difference and dark field image using the Talbot pattern. However, because of the technological difficulties and high cost of fabricating the gratings that make up the system, much efforts are being made to look for ways to replace them. The is a preliminary study to see how the Talbot pattern transfer through various kinds of scintillators and if the optical grating can be a way to replace the conventional absorption gratings. The geometry of the interferometer, the scintillator model, and the scintillator thickness are the main inputs for our simulation. We have used the concept of modulation for quantitative analysis of the contrast ratio of the Talbot pattern. This research is expected to provide very useful information on the design of optical gratings, which is an alternative way to analyze the Talbot pattern, which we have filed a patent on.

목차

Ⅰ. 서 론

Ⅱ. 본 론

Ⅲ. 결 과

Ⅳ. 고 찰

Ⅴ. 결 론

REFERENCES

키워드

Grating interferometer Scintillator characteristic Contrast Modulation Modulation transfer function 격자 간섭계 섬광체 특성 대조비 모듈레이션 변조전달함수