Interobserver repeatability of measurements on computed tomography images of lax canine hip joints from youth to maturity.
Interobserver repeatability of measurements on computed tomography images of lax canine hip joints from youth to maturity.
复制标题
观察者间测量的可重复性在从青年到成熟度的宽松犬髋关节的计算机断层扫描图像上。
DOI：
10.1111/j.1532-950x.2009.00580.x
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发表时间：
2009-12
期刊：
影响因子：
--
通讯作者：
Rettenmund C
中科院分区：
文献类型：
--
作者：
Lopez MJ;Davis KM;Jeffrey-Borger SL;Markel MD;Rettenmund C
确定不同年龄和成熟时存在退行性关节疾病的犬髋关节松弛的计算机断层扫描 (CT) 图像测量的观察者间重复性。纵向观察调查。兄弟杂种猎犬。在20、24、32、48、68和104周龄时进行盆腔CT检查。由 3 名研究人员在每个时间点对双髋的 3 个连续二维 (2D) 横向 CT 图像进行测量。测量中心边缘角（CEA）、水平外角（HTEA）、腹侧（VASA）、背侧（DASA）和水平（HASA）髋臼扇形角、髋臼指数（AI）和股骨头覆盖百分比（CPC）。观察者间的重复性通过组内相关系数（ICC）进行量化。当 ICC ≥ 0.75 时，认为重复性令人满意。 DASA、CEA 和 CPC 在所有年龄组中均可重复。除 1 个时间点外，HASA 和 HTEA 均可重复。在 20 周龄时，除 AI 之外的所有测量值都是可重复的，在 104 周龄时，DASA、CEA、CPC 和 HASA 都是可重复的。除了正常髋关节中的 AI 和 HASA 以及骨关节炎髋关节中的 VASA 和 HTEA 之外，测量在有或没有退行性变化的髋关节中都是可重复的。无论年龄或关节疾病如何，大多数检查的 2D CT 测量结果都是可重复的。二维 CT 测量可能会增强当前评估犬髋关节松弛的关节变化的技术。
To determine interobserver repeatability of measurements on computed tomography (CT) images of lax canine hip joints at different ages and in the presence of degenerative joint disease at maturity. Longitudinal observational investigation. Sibling crossbreed hounds. Pelvic CT was performed at 20, 24, 32, 48, 68, and 104 weeks of age. Measures were performed on 3 contiguous two-dimensional (2D) transverse CT images of both hips at each time point by 3 investigators. Center-edge angle (CEA), horizontal toit externe angle (HTEA), ventral (VASA), dorsal (DASA), and horizontal (HASA) acetabular sector angles, acetabular index (AI), and percent femoral head coverage (CPC) were measured. Interobserver repeatability was quantified with the intraclass correlation coefficient (ICC). Satisfactory repeatability was considered when ICC ≥ 0.75. DASA, CEA, and CPC were repeatable in all age groups. HASA and HTEA were repeatable for all but 1 time point. At 20 weeks of age, all measures but AI were repeatable, and at 104 weeks of age, DASA, CEA, CPC, and HASA were repeatable. Measures were repeatable in hips with and without degenerative changes with the exceptions of AI and HASA in normal hips and VASA and HTEA in osteoarthritic hips. Most 2D CT measurements examined were repeatable regardless of age or joint disease. Two-dimensional CT measures may augment current techniques for assessing joint changes in lax canine hips.