간접평판형 검출기에서 국제전자기술위원회 기준을 통한 잡음전력스펙트럼 비교 연구

• 영문명: Comparison of Noise Power Spectrum in Measurements by Using International Electro-technical Commission Standard Devices in Indirect Digital Radiography
• 발행기관: 대한방사선과학회(구 대한방사선기술학회)
• 저자명: 민정환(Jung-Whan Min) 정회원(Hoi-Woun Jeong) 김기원(Ki-Won Kim):권경태(Kyung-Tae Kwon) 정재용(Jae-Yong Jung) 손진현(Jin-Hyun Son) 김현수(Hyun-Soo Kim)
• 간행물 정보: 『방사선기술과학』방사선기술과학 제41권 제5호, 457~462쪽, 전체 6쪽
• 주제분류: 의약학 > 방사선과학
• 파일형태: PDF
• 발행일자: 2018.10.30

영문 초록

The purpose of this study was to compare image quality of indirect digital radiography (IDR) system using the International Electro-technical Commission standard (IEC 62220-1), and to suggest the analysis of noise power spectrum (NPS) which were applied to IEC 62220-1 in medical imaging. In this study, Pixium 4600 (Trixell, France) which is in-direct flat panel detector (FPD) was used. The size of image receptor (IR) is 7 × 17 inch (matrix 3001 × 3001) which performed 14bit processing and pixel pitch is 143 μm. In IEC standard, NPS evaluation were applied to RQA3, RQA5, RQA7 and RQA9. Because of different radiation quality, each region of interesting (ROI) were compared. The results of NPS indicated up to 3.5 mm -¹ including low Nyquist frequency. RQA5 indicated the lowest NPS and the others indicated higher NPS results relatively. NPS result of ROI a38 was higher than ROI a92 and this result indicated that there are more noise in left (cathode) than right (anode). This study were to evaluate NPS by using different radiation quality and setting the each ROI, and to suggest the quantitative methods of measuring NPS

목차

Ⅰ. 서 론

Ⅱ. 대상 및 방법

Ⅲ. 결 과

Ⅳ. 고 찰

Ⅴ. 결 론

키워드

Noise Power Spectrum Indirect Flat Panel Detector Region of Interest Nyquist Frequency Noise 잡음전력스펙트럼 간접 평판형검출기 관심영역 나이키스트 주파수 잡음