贵州医科大学学报

2011, v.36;No.148(01) 38-41

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Kappa统计量评价CT三维重建在髋臼骨折术前分型中的价值
Evaluation of Three-Dimensional Computerized Tomography Reconstruction in Preoperative Acetabular Fracture Classification with Kappa Statistic

包磊;姚伟武;姜玲霞;
BAO Lei,YAO Weiwu,JIANG Lingxia(Department of Radiology,the Sixth Affiliated Hospital of Shanghai Jiaotong University,Shanghai 200233,Shanghai,China)

摘要(Abstract):

目的:对比分析髋臼骨折的CT二维重建和CT三维重建影像资料所得骨折分型结果,用于评价CT三维重建对髋臼骨折分型术前评价的价值。方法:2位骨关节系统专业放射科医生回顾性分析本院56例髋臼骨折病例,分别使用CT二维重建和CT三维重建影像资料,对骨折分型作出判断,利用一致性检验来评价骨折术前分型的观察者间信度和观察者自身信度。结果:使用CT二维重建影像时,对髋臼骨折分型判断的观察者间信度和自身信度均为高度一致,Kappa系数分别为0.727和0.754。使用CT三维重建影像时,对髋臼骨折分型判断的观察者间信度和自身信度均提高为极度一致,Kappa系数分别为0.919和0.973。结论:利用CT三维重建成像技术能够提高对髋臼骨折术前分型的可靠性,CT三维重建对髋臼骨折分型术前评价有很高的应用价值。
Objective:To valuate the application of three-dimensional computerized tomography(3D CT)reconstruction in preoperative acetabular fracture classification by comparing classification results with data detected by 3D and 2D CT reconstruction.Methods: Images of 56 cases of acetabular fractures were retrospectively analyzed by two professional orthopaedics radiologists seperately with 3D and 2D CT reconstruction methods,to judge acetabular fracture type.Consistency check was employed to evaluate self-confidence of the observers(SC) and the confidence between each other(BC).Results: With the use of CT 2D image reconstruction,SC and BC for fracture classification were "very good",and Kappa values were 0.727 and 0.754 respectively.When CT 3D image reconstruction was used,SC and BC increased to "perfect agreement",and Kappa values were 0.919 and 0.973 respectively.Conclusions: CT 3D reconstruction could improve the reliability of preoperative acetabular fracture classification,and is helpful and worthwhile for preoperative evaluation of acetabular fracture classification.

关键词(KeyWords): 髋骨折;成像,三维;电子计算机横断层扫描,计算机体层摄影(术);髋臼骨折;二维重建;信度
hip fractures;imaging,three-dimensional;computed tomography;acetabular fracture;two-dimensional reconstruction;reliability

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作者(Author): 包磊;姚伟武;姜玲霞;
BAO Lei,YAO Weiwu,JIANG Lingxia(Department of Radiology,the Sixth Affiliated Hospital of Shanghai Jiaotong University,Shanghai 200233,Shanghai,China)

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DOI: 10.19367/j.cnki.1000-2707.2011.01.012

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