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Determination of Effective Energy of CT X-ray beams
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CT X-선 빔들의 유효에너지 결정

논문 기본 정보

Type
Academic journal
Author
Kim, Jong Eon (가야대학교 방사선학과)
Journal
한국방사선학회 한국방사선학회 논문지 한국방사선학회 논문지 제13권 제4호
Published
2019.1
Pages
517 - 522 (6page)

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Determination of Effective Energy of CT X-ray beams
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Abstract· Keywords

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The purpose of this study is to determine the effective energy of CT X-ray beams by using the CT slice images of a CT number calibration insert part in the AAPM CT performance phantom. The CT number calibration insert part in the AAPM CT performance phantom was scanned five times by using a CT canner for 80, 100 and 120 kVp X-ray beams. The average value of CT numbers of each pin were measured for each CT slice image. The correlation coefficients were obtained by linear fit between the average value of CT numbers measured and liner attenuation coefficient under different energy at each pin calculated from data of NIST. A photon energy corresponding to the maximum value of the obtained correlation coefficient was determined as an effective energy. As a result, the effective energy was 56, 62 and 66~67 keV, respectively, for 80, 100 and 120 kVp X-ray beams.
#관전압 #선감약계수 #상관계수 #유효에너지 #CT 수

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References (10)

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S. C. Chen / 2012 / Evaluation of x-ray beam quality based on measurements and estimations using SpekCalc and Ipem 78 models / Malaysian Journal of Medical Sciences 19(3):22~28 google schola National Institute of Standards and Technology / 2001 / NIST measurement services: calibration of x-ray and gamma-ray measuring instruments :1~96 google schola 김종언 / 2015 / 광자극형광나노닷선량계를 사용한 X선 빔의 유효에너지 결정 / 한국방사선학회논문지 9(6):375~379 Crossref NIST: XCOM:Photon Cross Sections Database google schola 2005 / Users Manual, Nuclear Associates 76-410-4130 and 76-411 AAPM CT Performance Phantom / Fluke corporation google schola

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