Center for Bone Disease, Marshfield Clinic, Marshfield, WI, USA.
J Clin Densitom. 2011 Jul-Sep;14(3):354-8. doi: 10.1016/j.jocd.2011.04.004. Epub 2011 Jun 11.
A longer dual-energy X-ray absorptiometry (DXA) femur scan field might be useful for the detection of atypical, subtrochanteric femur fractures (ASFF). Thirty adult subjects underwent triplicate measures of femoral neck (FN) and total hip (TH) bone mineral density (BMD) by DXA using a conventional (i.e., short) and a longer femur scan field. Differences in measured BMD between the 2 scan field lengths were small and less than the precision error inherent in DXA testing. A longer proximal femur scan field does not substantially alter BMD measurements made at the FN and TH and may be useful for the detection of ASFF in clinical practice.
较长的双能 X 射线吸收法（DXA）股骨扫描场可能有助于检测非典型、转子下股骨骨折（ASFF）。30 名成年受试者接受了 3 次 DXA 股骨颈（FN）和全髋关节（TH）骨密度（BMD）的重复测量，使用的是常规（即短）和较长的股骨扫描场。2 个扫描场长度之间测量的 BMD 差异较小，并且小于 DXA 测试固有的精密度误差。较长的股骨近端扫描场不会实质性地改变 FN 和 TH 处的 BMD 测量值，并且可能有助于临床实践中 ASFF 的检测。
