在骨密度正常或患有骨质疏松症的受试者中，数字X射线放射测量法与双能X线吸收法的精度比较。
The precision of digital X-ray radiogrammetry compared with DXA in subjects with normal bone density or osteoporosis.
作者信息
Elliot John R, Fenton Anna J, Young Tony, Mansfield Ann, Burton Craig, Wilkinson Tim J
机构信息
The Bone Clinic, Princess Margaret Hospital, Christchurch, New Zealand.
出版信息
J Clin Densitom. 2005 Summer;8(2):187-90. doi: 10.1385/jcd:8:2:187.
Digital X-ray radiogrammetry (DXR) is a technique to estimate bone mineral density (BMD) that can be available in any area able to take a standard radiograph of the hand. We aimed to establish the precision of this technique and compare this with that obtained by dual energy X-ray absorptiometry (DXA) at the hip and spine. We compared DXA and DXR in 28 women with osteoporosis defined by DXA at the femoral neck and in 28 women with normal BMD. We found that DXR has excellent precision of 0.004 g/cm(2) compared with 0.021 g/cm(2) and 0.015 g/cm(2) obtained by DXA at the hip and spine, respectively. We conclude that DXR measured by the automated Pronosco system has excellent precision.
数字X线摄影测量法（DXR）是一种估算骨矿物质密度（BMD）的技术，在任何能够拍摄手部标准X光片的区域均可使用。我们旨在确定该技术的精确度，并将其与通过双能X线吸收法（DXA）在髋部和脊柱获得的精确度进行比较。我们对28名股骨颈DXA诊断为骨质疏松症的女性和28名骨密度正常的女性进行了DXA和DXR比较。我们发现，DXR的精确度极佳，为0.004 g/cm²，而DXA在髋部和脊柱获得的精确度分别为0.021 g/cm²和0.015 g/cm²。我们得出结论，通过自动Pronosco系统测量的DXR具有极佳的精确度。
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