Ali Ali H A, Cowan Amy-beth, Gregory Jennifer S, Aspden Richard M, Meakin Judith R
Division of Applied Medicine, University of Aberdeen, IMS Building, Foresterhill, Aberdeen AB25 2ZD, UK.
Comput Methods Biomech Biomed Engin. 2012;15(2):167-72. doi: 10.1080/10255842.2010.518962. Epub 2011 May 24.
The 2D shape of the lumbar spine in the sagittal plane can be determined from lordosis angles measured between the corresponding end-plates of the vertebral bodies or by using an active shape model (ASM) of the vertebral body outline. The ASM was previously shown to be a more efficient and reliable method, but its accuracy has not been assessed. The aim of this study was to determine the accuracy of an ASM for characterising lumbar spine shape and compare this to conventional measurements. Images of 25 different lumbar spine shapes were generated and measured, using both methods, by three independent observers. The accuracy of the ASM, determined from lordosis angles predicted by the model, was found to be better than conventional measurements.
腰椎矢状面的二维形状可通过测量椎体相应终板之间的前凸角或使用椎体轮廓的主动形状模型（ASM）来确定。先前已证明ASM是一种更有效、更可靠的方法，但其准确性尚未得到评估。本研究的目的是确定ASM用于表征腰椎形状的准确性，并将其与传统测量方法进行比较。由三名独立观察者使用这两种方法生成并测量了25种不同腰椎形状的图像。根据模型预测的前凸角确定的ASM准确性优于传统测量方法。
