Schmidt J E, Amrami K K, Manduca A, Kaufman K R
Biomechanics Laboratory, Mayo Clinic, Charlton North L-110L, 200 First Street SW, Rochester, MN 55905, USA.
Skeletal Radiol. 2005 Oct;34(10):639-43. doi: 10.1007/s00256-005-0908-9. Epub 2005 May 25.
To design a semi-automated program to measure the minimum tibiofemoral joint space width (JSW) of knee radiographs.
Bilateral knee radiographs were obtained twice within a 2 week period from 34 asymptomatic research participants. Radiographic images were analyzed to report both the variability of the image analysis program and the reproducibility of JSW measurements within a 2 week period. In addition, the results were compared with minimum JSW measurements read manually by an experienced musculoskeletal radiologist.
The variability of the image analysis program was shown to be within one pixel. The results showed that reproducibility was better with the automated method. In addition, the manual method measured a greater minimum JSW than the automated method. There was no significant difference in between-day measurements. There was a significant difference reported between the automated and manual minimum JSW measurements.
A novel semi-automated method for measurement of JSW has been developed.
设计一个半自动程序来测量膝关节X线片上的最小胫股关节间隙宽度（JSW）。
在2周内从34名无症状研究参与者处获取双侧膝关节X线片两次。对X线图像进行分析，以报告图像分析程序的变异性以及2周内JSW测量值的可重复性。此外，将结果与由经验丰富的肌肉骨骼放射科医生手动读取的最小JSW测量值进行比较。
图像分析程序的变异性显示在一个像素以内。结果表明，自动方法的可重复性更好。此外，手动方法测量的最小JSW比自动方法更大。日间测量无显著差异。自动和手动测量的最小JSW之间存在显著差异。
已开发出一种用于测量JSW的新型半自动方法。
