中国组织工程研究

• 骨与关节图像与影像 bone and joint imaging • 上一篇    下一篇

髋臼几何参数的CT测量

胡荣慧,贺  斌,刘  力,严  睿,刘嘉凯,黄小波,张  剑,丁  薇   

  1. 昆明总医院医学影像科,云南省昆明市   650032
  • 收稿日期:2013-01-06 修回日期:2013-03-18 出版日期:2013-06-25 发布日期:2013-06-25
  • 通讯作者: 贺斌,副主任医师,昆明总医院医学影像科,云南省昆明市 650032 13150754028@163.com
  • 作者简介:胡荣慧☆,女,1963年生,四川省宣汉县人,汉族,2008年解放军第三军医大学毕业,博士,副主任医师,主要从事骨骼肌肉系统影像学诊断研究。 huronghui51@163.com

CT measurement of acetabulum geometric parameter

Hu Rong-hui, He Bin, Liu Li, Yan Rui, Liu Jia-kai, Huang Xiao-bo, Zhang Jian, Ding Wei   

  1. Department of Radiology, Kunming Military General Hospital, Kunming  650032, Yunnan Province, China
  • Received:2013-01-06 Revised:2013-03-18 Online:2013-06-25 Published:2013-06-25
  • Contact: He Bin, Associate chief physician, Department of Radiology, Kunming Military General Hospital, Kunming 650032, Yunnan Province, China 13150754028@163.com
  • About author:Hu Rong-hui☆, Doctor, Associate chief physician, Department of Radiology, Kunming Military General Hospital, Kunming 650032, Yunnan Province, China huronghui51@163.com

摘要:

背景:近年来尽管对髋臼形态特征的研究已经取得了一些成果,但由于髋臼结构和位置的特殊性,有关髋臼表面形态的定量描述至今尚未统一,这势必会影响髋关节病变诊断和治疗的准确性。
目的:探讨髋臼几何参数的CT测量方法。
方法:选取70例髋关节CT受检者,其中正常成人50例(两侧共100个髋关节),单侧先天性髋关节脱位患儿20例。对所有受检者髋关节CT图像进行冠状面重建和三维重建,比较正常成人髋臼上外倾角冠状位和三维测值,比较先天性髋关节脱位组患侧与正常侧髋臼上外倾角。选择配伍组设计方差分析,分别比较扫描床面为参照面和以身体冠状面为参照面测量左右侧髋臼后外展角、前髋臼指数及后髋臼指数。
结果与结论:髋臼上外倾角在冠状位测值为(39.99±6.1)°,在三维图像上测值为(40.13±5.80)°,2者比较,差异无显著性意义(P > 0.05)。先天性髋关节脱位患儿双侧上外倾角在冠状面的测量值,正常侧为(48.95±3.80)°,脱位侧为(63.56±6.35)°,二者之间差异有非常显著性意义(P < 0.01)。以扫描床面为参照面测量正常髋臼后倾角、前髋臼指数、后髋臼指数左右侧比较,差异有非常显著性意义(P < 0.01);以身体冠状面为参照面测量髋臼后倾角、前髋臼指数、后髋臼指数左右侧比较,差异无显著性意义(P > 0.05)。提示以冠状面为参照平面测量双侧后外展角和前、后髋臼指数准确可靠,可客观反映髋臼情况,为髋关节区病变的诊断和治疗提供确切的量化指标。

关键词: 骨关节植入物, 骨与关节图像与影像, 髋臼, 几何参数, 髋关节, 三维重建, 外倾角, 髋臼外展角, 髋臼指数

Abstract:

BACKGROUND: Although, the previous studies on acetabular morphological characteristics have yielded some results, quantitative description of the acetabular surface morphology has not yet been unified because of the special nature of acetabular structure and location, and this is bound to affect the accuracy of the diagnosis and treatment of hip disease.
OBJECTIVE: To investigate the CT measuring methods to acetabulum geometric parameters.
METHODS: Seventy cases performed CT scan were selected, including 50 normal adults (a total of 100 hips on both sides) and 20 cases with unilateral congenital hip dislocation. The hip CT images of the subjects were treated with coronal reconstruction and three-dimensional reconstruction, in order to compare the coronal and three-dimensional measurement value of acetabulum upper chamber, and to compare acetabulum upper camber between the normal side and the abnormal side in the congenital hip dislocation group. The acetabulum posterior abduction angle, anterior acetabulum index and posterior acetabular index were measured in the images in accordance with scan bed and the body coronal plane.
RESULTS AND CONCLUSION: The acetabulum upper camber measured in coronal plane and three-dimensional image was (39.99±6.1)° and (40.13±5.80)° respectively, and there was no significant difference (P > 0.05). The acetabulum upper camber measured value of the unilateral congenital hip dislocation patients in normal side and abnormal side on coronal plane was (48.95±3.80)° and (63.56±6.35)°, and there were significant differences (P < 0.01). There were significant differences in acetabulum posterior abduction angle, anterior acetabulum index and posterior acetabular index measured in both sides on the images in accordance with scan bed and the body coronal plane (P < 0.01), and there were no significant differences in accordance with coronal plane (P > 0.05). The measurement is more reliable on the images in accordance with the body coronal plane when measuring acetabulum posterior abduction angle, anterior acetabulum index and posterior acetabular index. It can reflect the acetabular real condition and provide quantitative indicators for the diagnosis and treatment of hip disease.

Key words: bone and joint implants, photographs and images of bone and joint, acetabulum, geometric parameter, hip joint, three-dimensional reconstruction, camber angle, abduction angle, acetabulum index

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