| 毕万利,武乐斌,赵鹏,李宁,王继孟.三维CT在小儿发育性髋关节脱位的临床应用[J].中国医学影像技术,2007,23(5):737~740 |
| 三维CT在小儿发育性髋关节脱位的临床应用 |
| Clinical application of CT three-dimensional reconstruction in developmental dislocation of pediatric hip |
| 投稿时间：2006-09-05 修订日期：2007-05-16 |
| DOI： |
| 中文关键词: 小儿 髋关节脱位 X线体层摄影术,计算机 |
| 英文关键词:Pediatrics Dislocation of hip Tomography, X-ray computed |
| 基金项目: |
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| 中文摘要: |
| 目的 探讨SSD三维重建技术在小儿发育性髋关节脱位的临床应用价值。方法 对38例共45髋小儿发育性髋关节脱位进行CT扫描并SSD三维重建,将股骨头与髋臼分离,主要观察髋臼的发育情况,对髋臼发育不良进行分型并与X线及手术对照。结果 小儿髋臼发育不良的主要三维CT表现:① 髋臼缘变平、凹陷、凹凸不平、"双边"征,髋臼窝底局部或整个变浅伴髋臼不规则增大或变小。②假臼形成。③单纯髋臼窝局部缺损,髋臼缘发育正常。43个髋臼发育不良的三维CT表现与手术相同,其中中上缘发育不良24髋,后缘发育不良6髋,前缘发育不良4髋,混合型发育不良8髋,单纯髋臼窝底发育不良1髋。结论 SSD三维图像不仅可以对DDH作出正确诊断,而且可以分离髋关节,多角度清楚显示髋臼病变,并对髋臼发育不良确切分型,为手术方案的制订和术后评估提供客观依据。 |
| 英文摘要: |
| Objective To evaluate three-dimensional CT imaging reconstruction finding of the developmental dislocation of hip (DDH) of children and study its clinical application. Methods Forty-five hips in 38 patients with DDH were studied using thin-slice volume scan and 3D reconstruction in the way of surface shaded display (SSD) and compared with operation and plain film. Head of femur and acetabulum were separated from Three-dimensional CT (3D CT) image in all hip joints. Acetabulum shape and classification of dysplasia of acetabulum were investigated mostly. Results The fundamental signs of DDH on the SSD image included the acetabular lip with flat, concavity and dual-edges, the shallow acetabulum with enlargement or diminution, the artificial acetabulum and the single dysplasia of the acetabular fossa without dysplasia of acetabular lip. 3D CT image showed that midsuperior, posterior, anterior and mixed location of the acetabular lip dysplasia were 24, 6, 4 and 8 hips respectively. There was 1 hip with dysplasia of the acetabular fossa without dysplasia of acetabular lip. Conclusion SSD image not only had enough information for the diagnosis of DDH, but also had the special function to separate the hip and clearly showed the dysplasia of acetabulum, which can be correctly classified, and provide more information for choosing therapeutic methods and evaluating prognosis. |
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