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Comparison Measurement Error of T-score Between Lumbar and Femoral Neck According to Kind of DXA

DXA측정기 종류에 따른 요추부와 대퇴경부 골밀도 값의 측정오차 비교

  • Received : 2009.11.02
  • Accepted : 2010.02.25
  • Published : 2010.03.28

Abstract

In this study, three different devices, Norland, Osteocore and Lunar were used to compare and analyze the measurement error by each bone density measurement device by classifying the physical characteristics into age, height and weight, the subject of total 300 sampling 100 persons for each device. Categorizing Lumbar region and Femoral neck as normal (T-score$\geqq$-1.0), osteopenia (-1.0>T-score>-2.5) and osteoporosis (T-score$\leqq$-2.5), the findings were observed as follows. Norland device showed the least measurement error in age and height, while Lunar showed the least in weight among the devices. And, the result of comparing the bone density measurement error based on the lumbar region showed that all of Lunar, Norland and Osteocore have the least variation of measurement error in osteopenia and the result of comparing based on the femoral neck showed that all of Lunar, Norland and Osteocore have the least variation of measurement error in osteoporosis. For each variable, the measurement error was observed to be vary upon the device. To solve this, standardized common Phantom should be used to compare and converge the measured value of each company and cross-calibration would be necessary when replacing the software.

Keywords

Bone Density Measuring Instrument;Lumbar;Femoral Neck;Osteoporosis

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