Mason R L, Ruthven C
Science. 1965 Oct 8;150(3693):221-2. doi: 10.1126/science.150.3693.221.
An X-ray bone densitometer has been developed which makes direct tracings of absorption curves on a nearly linear scale. Speed and precision are increased by elimination of x-ray film. Results are reproducible to within 3 percent with a phantom finger, and within 6 percent with human subjects.
一种X射线骨密度仪已被研制出来，它能在近乎线性的刻度上直接描绘吸收曲线。通过省去X光胶片提高了速度和精度。使用模拟手指时，结果的重现性在3%以内，使用人体受试者时在6%以内。
