Journal of Radiation Industry (방사선산업학회지)

Korean Society of Radiation Industry (한국방사선산업학회)
권호 표지

Cross-Calibration of Domestic Devices and GE Lunar Prodigy Advance Dual-Energy X-Ray Densitometer Devices for Bone Mineral Measurements

국산 이중에너지 방사선흡수 골밀도 장치와 GE Lunar Prodigy의 교차분석 식 도출에 관한 연구

  • Kim, Jung-Su (Department of Radiologic-Technology, Chungbuk Health & Science University) ;
  • Rho, Young-Hoon (Department of Bio-convergence Engineering, Korea University Graduate School) ;
  • Lee, In-Ju (Department of Bio-convergence Engineering, Korea University Graduate School) ;
  • Kim, Kyoung-Ah (Department of Diagnostic Radiology, CHA Bundang Medical Center, CHA University) ;
  • Lee, In-Ja (Department of Radiologic Technology, Dongnam Health University) ;
  • Kim, Jung-Min (Department of Bio-convergence Engineering, Korea University Graduate School)
  • 김정수 (충북보건과학대학교 방사선과) ;
  • 노영훈 (고려대학교 대학원 바이오융합공학과) ;
  • 이인주 (고려대학교 대학원 바이오융합공학과) ;
  • 김경아 (분당차병원 영상의학과) ;
  • 이인자 (동남보건대학교 방사선과) ;
  • 김정민 (고려대학교 대학원 바이오융합공학과)
  • Received : 2016.10.25
  • Accepted : 2017.02.22
  • Published : 2017.03.31

⟨ Previous Next ⟩

Abstract

Reliable follow-up of bone mineral density (BMD) by dual energy X-ray absorptiometry (DXA) is essential in clinical practice. When there is a difference in the BMD values from DXA systems in the same patient, cross calibration equation is required for the reliable follow-up. Unfortunately, no equation is existed in BMD measure between GE Lunar Prodigy Advance (US, GE Healthcare; LPA) and Osteosys Dexxum T (Korea, Osteosys; ODT) DXA systems. In this study, we evaluate the agreement of BMD values between LPA and ODT and suggest the cross calibration equation using European spine phantom (ESP) with two systems. We performed BMD measurements using ten scans with ESP in each DXA systems. We compared BMD values and calculated cross calibration equation by linear regression analysis. The comparison between the LPA and ODT bone densitometers used the ESP. Compared to the ESP BMD values, ODT underestimated 14.36% and LPA overestimated 12.96%. The average of total BMD measurement values acquired with ODT were 21.44% lower than those from LPA. Cross-calibration equation for LPA and ODT was derived from ESP. We calculated simple cross calibration equation for LPA and ODT DXA systems. Cross-calibration equation is necessary for the reliable follow-up of BMD values in two different systems.

Keywords