Tyson J E, Maravilla A, Lasky R E, Cope F A, Mize C E
Am J Dis Child. 1983 Aug;137(8):735-7. doi: 10.1001/archpedi.1983.02140340019004.
Although photon absorptiometry is increasingly used to evaluate bone mineral content of neonates, its reliability in this age group is unclear. The midradius or middistal radius of 12 growing preterm infants was scanned, using a Norland 278 Densitometer. Proper examiner technique and densitometer calibration were first verified. In three infants, the bone edges were not consistently discernible from soft tissue. In the remaining nine infants, apparatus variability (the percent change in bone mineral content of scans repeated without repositioning the infant) was comparable to intraexaminer and interexaminer variability (determined after the same or a different examiner repositioned the infant and repeated the scan). The variability for successive scans ranged from -73% to +60% (SD, 5% to 36%). Adequate reliability for preterm infants remains to be documented for commercially available photon absorptiometers by in vivo studies.
尽管光子吸收测定法越来越多地用于评估新生儿的骨矿物质含量，但其在这个年龄组中的可靠性尚不清楚。使用Norland 278型骨密度仪对12名生长中的早产婴儿的桡骨中部或桡骨中远端进行了扫描。首先验证了检查者的正确技术和骨密度仪的校准。在三名婴儿中，骨边缘与软组织之间无法始终清晰区分。在其余九名婴儿中，仪器的可变性（在不重新放置婴儿的情况下重复扫描的骨矿物质含量的百分比变化）与检查者内部和检查者之间的可变性相当（在同一名或另一名检查者重新放置婴儿并重复扫描后确定）。连续扫描的可变性范围为-73%至+60%（标准差，5%至36%）。对于市售的光子吸收测定仪，早产婴儿的足够可靠性仍有待通过体内研究来证明。
