定义脚和脚的重要关节的正常关节空间宽度,使用一个客观的负载重量CT Hounsfield单元算法
Hannah J Zeller1, Donald D Anderson2, Tutku Tazegul1
1Departments of Orthopedics and Rehabilitation, The University of Iowa, 200 Hawkins Dr, Iowa City, IA 52242, United States.
概括
这项研究使用负载CT (WBCT) 来确定四脚和脚关节的正常关节空间宽度 (JSW) 和Hounsfield单位 (HU) 强度配置文件. 这些客观措施为未来的骨关节炎分级系统提供了基准.
科学领域:
- 整形外科 整形外科 整形外科
- 放射学 放射学是一门学科.
- 生物医学工程 生物医学工程
背景情况:
- 在脚和脚关节的骨关节炎 (OA) 评估 (脚关节,脚关节下,脚关节,第一个甲关节) 取决于主观分级.
- 目前的方法缺乏可靠性和可重复性,阻碍了准确的OA进展监测.
研究的目的:
- 在四个关键脚和脚关节中定义正常的关节特征和关节空间宽度 (JSW).
- 利用对健康受试者的负载CT (WBCT) 强度概况的客观分析.
主要方法:
- 对20名健康受试者 (40英尺) 的横截面研究,没有OA或足部形的证据.
- 用五个平行空间投影来分析WBCT扫描来测量WBCT强度.
- 量化了Hounsfield单位 (HU) 强度的联合空间宽度 (JSW) 和迈克尔森对比度.
主要成果:
- 在健康的关节,关节下部,关节和第一大关节的平均JSW分别为3.97,4.20,3.33和3.87毫米.
- 平均迈克尔森对比值分别为71.8,92.5,84.1和101.4. 这两种对比值分别为71.8,92.5,84.1和101.4.
结论:
- 采用了新的WBCT强度配置文件的3D分析.
- 建立了对正常脚和脚关节的客观JSW和HU强度值.
- 为开发一个客观的骨关节炎分级系统提供了基础.
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