Tampere University Medical School, Tampere, Finland; Department of Biomedical Engineering, Tampere University of Technology, Tampere, Finland; Medical Imaging Centre, Tampere University Hospital, Tampere, Finland.
J Magn Reson Imaging. 2011 Dec;34(6):1359-66. doi: 10.1002/jmri.22751. Epub 2011 Sep 23.
To assess the ability of co-occurrence matrix-based texture parameters to detect exercise load-associated differences in MRI texture at the femoral neck cross-section.
A total of 91 top-level female athletes representing five differently loading sports and 20 referents participated in this cross-sectional study. Axial T1-weighted FLASH and T2*-weighted MEDIC sequence images of the proximal femur were obtained with a 1.5T MRI. The femoral neck trabecular bone at the level of the insertion of articular capsule was divided manually into regions of interest representing four anatomical sectors (anterior, posterior, superior, and inferior). Selected co-occurrence matrix-based texture parameters were used to evaluate differences in apparent trabecular structure between the exercise loading groups and anatomical sectors of the femoral neck.
Significant differences in the trabecular bone texture, particularly at the superior femoral neck, were observed between athletes representing odd-impact (soccer and squash) and high-magnitude exercise loading (power-lifting) groups and the nonathletic reference group.
MRI texture analysis provides a quantitative method for detecting and classifying apparent structural differences in trabecular bone that are associated with specific exercise loading.
评估基于共生矩阵的纹理参数在检测股骨颈横截面上与运动负荷相关的 MRI 纹理差异方面的能力。
本研究为一项横断面研究，共纳入 91 名顶级女性运动员（代表 5 种不同负荷的运动项目）和 20 名对照者。使用 1.5T MRI 获得股骨近端的轴向 T1 加权快速自旋回波（FLASH）和 T2*-加权磁共振弥散加权成像（MEDIC）序列图像。在关节囊附着处水平，手动将股骨颈骨小梁分为代表四个解剖区域（前、后、上、下）的感兴趣区。选择基于共生矩阵的纹理参数来评估运动负荷组和股骨颈解剖区域之间的表观小梁结构差异。
在代表奇数冲击（足球和壁球）和高负荷运动（举重）的运动员与非运动员对照组之间，观察到股骨颈上部的骨小梁纹理存在显著差异，特别是在股骨颈上部。
MRI 纹理分析提供了一种定量方法，用于检测和分类与特定运动负荷相关的小梁骨表观结构差异。
