지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록· 키워드
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Background: Although dual energy X-ray absorptiometry (DXA) is known to standard equipment for bone mineral density (BMD) measurements. Different results of BMD measurement using a number of different types of devices are difficult to use clinical practice.
The purpose of this study was to evaluate discrepancy and standardizations of DXA devices from three manufactures using a European Spine Phantom (ESP). Methods: We calculated the accuracy and precision of 36 DXA devices from three manufacturers (10 Hologic, 16 Lunar, and 10 Osteosys) using a ESP (semi-anthropomorphic). The ESP was measured 5 times on each equipment without repositioning. Accuracy was assessed by comparing BMD (g/cm2 ) values measured on each device with the actual value of the phantom. Precision was assessed by the coefficient of variation (CVsd). Results: Lunar devices were, on average, 22%, 8.3%, and 5% overestimation for low (L1) BMD values, medium (L2) and high (L3) BMD values. Hologic devices were, on average, 6% overestimation for L1 BMD, and 5% and 6.2% underestimation for L2 and L3 BMD values. Osteosys devices was, on average, 12.7% (0.063 g/cm2 ), 6.3% (0.062 g/cm2 ), and 5% (0.075 g/ cm2 ) underestimation for L1, L2, and L3, respectively. The mean CVsd for L1-L3 BMD were 0.01%, 0.78%, and 2.46% for Lunar, Hologic, and Osteosys devices respectively. Conclusions: The BMD comparison in this study demonstrates that BMD result of three different devices are significant different between three devices. Differences of BMD between three devices are necessary to BMD standardization.
목차
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참고문헌 (14)
참고문헌 신청
Bland JM / 1986 / Statistical methods for assessing agreement between two methods of clinical measurement / Lancet 1 : 307 ~ 310
Genant HK / 1994 / Universal standardization for dual x-ray absorptiometry : patient and phantom cross-calibration results / J Bone Miner Res 9 : 1503 ~ 1514
Genant HK / 1999 / Interim report and recommendations of the World Health Organization Task-Force for Osteoporosis / Osteoporos Int 10 : 259 ~ 264
Gluer CC / 1995 / Accurate assessment of precision errors : how to measure the reproducibility of bone densitometry techniques / Osteoporos Int 5 : 262 ~ 270
Hui SL / 1997 / Universal standardization of bone density measurements : a method with optimal properties for calibration among several instruments / J Bone Miner Res 12 : 1
Genant HK / 1994 / Universal standardization for dual x-ray absorptiometry : patient and phantom cross-calibration results / J Bone Miner Res 9 : 1503 ~ 1514
Genant HK / 1999 / Interim report and recommendations of the World Health Organization Task-Force for Osteoporosis / Osteoporos Int 10 : 259 ~ 264
Gluer CC / 1995 / Accurate assessment of precision errors : how to measure the reproducibility of bone densitometry techniques / Osteoporos Int 5 : 262 ~ 270
Hui SL / 1997 / Universal standardization of bone density measurements : a method with optimal properties for calibration among several instruments / J Bone Miner Res 12 : 1
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