Browse > Article
http://dx.doi.org/10.5392/JKCA.2016.16.07.681

Consideration of the X-ray Spectrum Change and Resolution According to Added Filters, SID, A-Si (CsITl) in the Imaging System  

An, Hyeon (인제대학교 부산백병원 영상의학과)
Kim, Jung-Hoon (부산가톨릭대학교 보건과학대학 방사선학과)
Lee, Dongyeon (동남권 원자력의학원 방사선종양학과)
Ko, Sungjin (부산가톨릭대학교 보건과학대학 방사선학과)
Kim, Changsoo (부산가톨릭대학교 보건과학대학 방사선학과)
Publication Information
The Journal of the Korea Contents Association / v.16, no.7, 2016 , pp. 681-688 More about this Journal
Abstract
This study assess their quality of radiation on analysis of the spectrum of resolution suggesting IEC 61267 in radiation quality that RQA3, RQA5, RQA7, RQA9 and combination of clinical condition using several quality of radiation. In experiments edge method first, the spatial resolution assessment used image of the additional filter and SID is obtained the IEC 62220-1, spatial resolution and sharpness of the obtained image was evaluated in the MTF value 10%(0.1), MTF value 50%(0.5) using a Matlab program. Second, MCNPX simulation used spatial resolution analysis was radiation quality particle fluence and spectrum analysis in energy. As a result, make use of additional filter, image quality evaluation of SID that RQA3 radiation quality combination qualification is higher spatial resolution and sharpness make unused of additional filter and SID 100cm. RQA7 radiation quality combination qualification is higher that spatial resolution make unused of additional filter and SID 150cm. RQA9 radiation quality combination qualification is higher that spatial resolution and sharpness make used of additional filter and SID 180cm. spectrum analysis of radiation quality by reducing consequent errors occurring in the experiment that error due to the reproducibility of the X-ray tube, occur in an error of correction the detector suggest ideal conditions from spectrum analysis through MCNPX simulation. In conclusion, by suggesting spatial resolution and sharpness of result for various radiation quality, It provide basic data that radiation quality condition and quantitative assessment method for laboratory in clinical using detector evaluation.
Keywords
IEC Radiation Quality; MTF; Spatial Resolution; Sharpness; MCNPX;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 M. J. Yaffe and J. A. Rowlands, "X-ray detectors for digital radiography," Physics in Medicine and Biology, Vol.42, No.1, pp.1-39, 1997.   DOI
2 M. M. Tesic, R. A. Mattson, G. T. Barnes, R. A. Sones, and J. B. Stickney, "Digital radiography of the chest: design features and considerations for a prototype unit," Radiology, Vol.148, No.1, pp.259-264, 1983.   DOI
3 Maryellen Lissak Giger and Kunio Doi, "Investigation of basic imaging properties in digital radiography: Modulation Transfer Function," Medical Physics, Vol.11, No.3, pp.287-295, 1984.   DOI
4 Richard L Van Metter, Jacob Beutel, and Harold L Kundel, "Handbook of Medical Imaging," Physics and Psychophysics, Vol.1, 2000.
5 J. T. Dobbins, D. L. Ergun, L. Rutz, D. A. Hinshaw, H. Blume, and D. C. Clark, "DQE(f) off our generations of computed radiography acquisition devices," Medical Physics, Vol.22, No.10, pp.1581-1593, 1995.   DOI
6 IEC62220-1, "Medical Electrical Equipment Characteristics of Digital X-Ray Imaging Devices - Part 1, Determination of the Detective Quantum Efficiency," 2003.
7 IEC 61267, "Medical diagnostic X-ray Equipment Radiation Conditions for use in the Determination of Characteristics," 2005.
8 정은선, 비정질 셀레늄 검출기의 변조전달함수(MTF)를 구하기 위한 Monte Carlo 전산 모사 연구, 인제대학교 대학원, 석사학위논문, 2005.
9 Kawashita Ikuo, Maeda Kouji, Arimura Hidetaka, Morikawa Kaoru, and Ishida Takayuki, "Development of an automated method for evaluation of sharpness of digital radiographs using edge method," Physics of Medical Imaging, Proceedings of SPIE, Vol.4320, pp.331-338, 2001.
10 강태욱, 간접변환방식(a-Si)의 디지털 X선 촬영 장치의 성능평가, 고려대학교 의용과학 대학원 의학물리학과, 석사학위논문, 2010
11 L. E. Antonuk, Y. EI-Mohri, J. H. Siewerdsen, J. Yorkston, W. Huang, V. E. Scarpine, and R. A. Street, "Empirical investigation of the signal performance of a high-resolution, ondirect detection, active matrix flat-panel image(AMFPI) for flouroscopic and radiographic operation," Med. Phys., Vol.24, No.1, pp.51-70, 1997.   DOI
12 한동현, GEANT4 코드를 이용한 진단용 엑스선 발생장치의 엑스선 스펙트럼 계산에 관한 연구, 전북대학교 대학원, 박사학위논문, 2012.
13 안현, 김창수, 김정훈, "디지털 방사선시스템에서 IEC 표준을 이용한 방사선 영상 품질의 평가," 한국콘텐츠학회논문지, 제15권, 제7호, pp.289-299, 2015.   DOI
14 Jone M. Boone and J. Antony Seibert, "An accurate method for computer-generating tungsten anode x-ray spectra from 30 to 140kV," Medical Physics, Vol.24, No.11, pp.1661-1670, 1997.   DOI
15 정지영, 박혜숙, 조효민, 이창래, 남소라, 이영진, 김희중, "CR 시스템의 종류와 I.P 크기에 따른 정량적 영상특성평가," 한국의학물리학회지, 제19권, 제4호, pp.63-72, 2008.
16 R. H. Behrman, "The impact of increased Al Filtration on x-ray tube loading and image quality in diagnostic radiology," Med Phys, Vol.30, No.1, pp.9-78, 2003.   DOI