대한방사선기술학회지:방사선기술과학 (Journal of radiological science and technology)

  • 제40권2호
  • /
  • Pages.197-203
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  • 2017
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  • 2288-3509(pISSN)
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  • 2384-1168(eISSN)
대한방사선과학회 (Korean Society of Radiological Science)
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흉부영상에서 평활화 시 심장저부 음영의 신호 대 잡음비 비교평가

Evaluation and Comparison of Signal to Noise Ratio According to Histogram Equalization of Heart Shadow on Chest Image

  • 김기원 (강동경희대병원 영상의학과) ;
  • 이을규 (인제대학교서울백병원 영상의학과) ;
  • 정회원 (백석문화대학교 방사선과) ;
  • 손진현 (신구대학교 방사선과) ;
  • 강병삼 (신구대학교 방사선과) ;
  • 김현수 (신구대학교 방사선과) ;
  • 민정환 (신구대학교 방사선과)
  • Kim, Ki-Won (Department of Radiology, Kyung Hee University Hospital at Gang-dong) ;
  • Lee, Eul-Kyu (Department of Radiology, Inje Paik University Hospital at Jeo-dong) ;
  • Jeong, Hoi-Woun (Department of Radiological Technology, The Baekseok Culture University) ;
  • Son, Jin-Hyun (Department of Radiological Technology, The Shingu University) ;
  • Kang, Byung-Sam (Department of Radiological Technology, The Shingu University) ;
  • Kim, Hyun-Soo (Department of Radiological Technology, The Shingu University) ;
  • Min, Jung-Whan (Department of Radiological Technology, The Shingu University)
  • 투고 : 2017.05.10
  • 심사 : 2017.06.23
  • 발행 : 2017.06.30
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초록

본 연구는 흉부영상에서 심장저부 음영 관심영역(Region of Interest; ROI)의 신호대잡음비(Signal to Noise Ratio; SNR)를 Post processing에서의 이퀄라이제이션 기법으로 측정 평가하였다. 연구대상은 대학병원에서 흉부검사를 실시한 환자 87명이다. 측정방법은 ImageJ 프로그램을 사용하여 표본의 인구사회학적 특성, 영상별 흉부영상의 SNR평균값, 95% 신뢰구간 값, SNR평균차이 값 등을 분석하였다. 이때 SPSS Statistics21 통계프로그램으로 ANOVA 분석을 하였으며, 95%(p < 0.05)에서 유의한 것으로 판단하였다. 영상별 분석결과의 SNR은 Original chest image, Original chest image heart shadow, Equalization chest image, Equalization chest image heart shadow순으로 높은 값을 나타냈다(p < 0.001). 결론적으로, 본 연구에서는 흉부영상의 평활화 시 심장저부 음영의 정량화한 평가결과를 보조적인 수단으로 활용할 수 있을 것으로 사료된다.

The purpose of this study was to measure signal to noise ratio (SNR) according to change of equalization from region of interest (ROI) of heart shadow in chest image. We examined images of chest image of 87 patients in a University-affiliated hospital, Seoul, Korea. Chest images of each patient were calculated by using ImageJ. We have analysis socio-demographical variables, SNR according to images, 95% confidence according to SNR of difference in a mean of SNR. Differences of SNR among change of equalization were tested by SPSS Statistics21 ANOVA test for there was statistical significance 95%(p < 0.05). In SNR results, with the quality of distributions in the order of original chest image, original chest image heart shadow and equalization chest image, equalization chest image heart shadow(p < 0.001). In conclusion, this study would be that quantitative evaluation of heart shadow on chest image can be used as an adjunct to the histogram equalization chest image.

키워드

참고문헌

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