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Evaluation of Image Quality for Diagnostic Digital Chest Image Using Ion Chamber in the Total Mastectomy

변형근치유방절제술 환자의 Ion chamber 변화에 따른 디지털 흉부 영상의 화질 평가

  • 이진수 (부산가톨릭대학교 대학원 방사선학과) ;
  • 고성진 (부산가톨릭대학교 보건과학대학 방사선학과) ;
  • 강세식 (부산가톨릭대학교 보건과학대학 방사선학과) ;
  • 김정훈 (부산가톨릭대학교 보건과학대학 방사선학과) ;
  • 박형후 (김원묵 기념 봉생병원) ;
  • 김동현 (부산가톨릭대학교 보건과학대학 방사선학과) ;
  • 김창수 (부산가톨릭대학교 보건과학대학 방사선학과)
  • Received : 2012.09.03
  • Accepted : 2012.11.05
  • Published : 2013.03.28

Abstract

The patients who had been operated total mastectomy are different from general women in their breasts thickness due to breast surgery. As a result, digital chest image from total mastectomy patients will be different attenuation. The main objective for this study is to show that a proper Ion chamber standard combination measuring MTF which is objective basis for Digital image, when be x-ray for total mastectomy patient. We have designed the unique number that shown Left is 1, Right is 2, Center is 3 and have put the edge phantom on detector ion chamber. Lastly, we have obtained experiment images. The evaluations of all image quality have measured by 50% MTF of spatial resolution and absorption dose using Matlab(R2007a). The result showed that average exposure condition, MTF value, absorption dose for 1+3 and 2+3 combinations were 2.745 mAs, 1.925 lp/mm, 0.688 mGy. Consequently, that showed high MTF, DQE and low dose than other combinations. Therefore, a proper changes of ion chambers are able to improve image quality and to reduce radiation exposure when be X-ray for total mastectomy patients. Also, it will be possible to standard for application chamber combination and utilization on clinical detection.

Keywords

Total Mastectomy;Ion Chamber;MTF;DQE;Digital Chest Image

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Cited by

  1. Quantitative Evaluation of Image Quality using Automatic Exposure Control & Sensitivity in the Digital Chest Image vol.13, pp.8, 2013, https://doi.org/10.5392/JKCA.2013.13.08.275