Reinus W R, Hardy D C
From the Mallinckrodt Institute of Radiology, Washington University Medical School, St. Louis, Missouri 63110.
Invest Radiol. 1988 Jan;23(1):42-6. doi: 10.1097/00004424-198801000-00009.
Measurements of bone mineral using single and dual-energy quantitative computed tomography (CT) are examined in vivo in 108 vertebral bodies scanned on a Siemens DRH scanner. Pre and postprocessing dual-energy techniques are compared. In the range of clinically useful kilovoltage, the choice of beam energy does not make a significant difference to the single-energy bone mineral measurement. Postprocessing dual-energy measurement in vivo shows a statistically significant decrease in the amount of mineral measured compared to single-energy measurements, whereas the preprocessing measurement shows a significant increase.
使用单能和双能定量计算机断层扫描（CT）对骨矿物质进行测量，在西门子DRH扫描仪上对108个椎体进行了体内扫描。对双能技术的预处理和后处理进行了比较。在临床有用的千伏范围内，束流能量的选择对单能骨矿物质测量没有显著差异。与单能测量相比，体内双能后处理测量显示测量的矿物质含量有统计学意义的下降，而预处理测量则显示有显著增加。
