| 刘振清,刘鸿圣,黄莉,肖伟强,吴倩倩.MRI定量分析正常儿童前后髋臼发育[J].中国医学影像技术,2018,34(4):601~604 |
| MRI定量分析正常儿童前后髋臼发育 |
| Quantitative MRI analysis of normal development of anterior and posterior acetabulum in children |
| 投稿时间：2017-03-09 修订日期：2018-02-02 |
| DOI：10.13929/j.1003-3289.201703039 |
| 中文关键词: 磁共振成像 髋臼 生长和发育 儿童 |
| 英文关键词:Magnetic resonance imaging Acetabulum Growth and development Child |
| 基金项目:广州市科技计划项目（12A113151807）。 |
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| 中文摘要: |
| 目的 探讨以股骨头中心点至同侧髋臼最薄弱点之间连线为基线测量前后髋臼指数评价儿童髋关节前后髋臼的正常发育规律。方法 收集165名1个月~12岁正常儿童髋关节MRI资料，分别以股骨头中心点到同侧髋臼最薄弱点之间的连线为基线（方法1）和以双侧Y形软骨中点的连线为基线（方法2），测量前/后骨性髋臼指数（A/PBAI）和前/后软骨性髋臼指数（A/PCAI），观察2种方法、观察者间及观察者内测量上述指数的一致性，并分析以上指数与年龄的相关性。结果 2种方法测量ABAI（ICC=0.832）的一致性好，测量ACAI（ICC=0.535）、PBAI（ICC=0.565）、PCAI（ICC=0.472）的一致性均较好。观察者间及观察者内测量髋臼指数的一致性均好（ICC均> 0.75）。ABAI、ACAI及PBAI与年龄呈负相关（r=-0.762、-0.475、-0.368，P均< 0.001），PCAI与年龄无明显相关（r=-0.190，P<0.005）；4岁前，ABAI随年龄增长逐渐减小，4岁后逐步趋于平稳；ACAI及PBAI随年龄增长稍有降低；PCAI随年龄变化不明显。结论 以股骨头中心点至髋臼最薄弱点连线为基线测量前后骨性或软骨性髋臼指数，可准确评价髋关节前后髋臼的正常发育情况。 |
| 英文摘要: |
| Objective To investigate the normal development of anterior and posterior acetabulum in children through measuring anterior and posterior acetabular indexes with the baseline from the thinnest point of acetabulum to the center of femoral head. Methods MRI data in 165 normal children aged 0-12 years were collected. The baselines were drawn from the center of the femoral head to the thinnest point of acetabulum (method 1) and from the one midpoint of Y cartilage to the contralateral (method 2), then the anterior or posterior bony acetabular index (A/PBAI) and anterior or posterior cartilaginous acetabular indexes (A/PCAI) were measured. The consistency of above parameters measured using two methods and between two observers was observed, and the correlation with parameters-gestational ages was analyzed. Results The consistency of ABAI (ICC=0.832) measured with two methods was good, and the consistency of ACAI (ICC=0.535), PBAI (ICC=0.565) and PCAI (ICC=0.472) was fair. The consistency between two observers was good (all ICC > 0.75). ABAI, ACAI and PBAI were negatively correlated with age (r=-0.762, -0.475, -0.368, all P<0.001), and PCAI had no correlation with age (r=-0.190, P<0.005). Before 4 years old, ABAI gradually decreased with age and gradually stabilized after 4 years of age. ACAI and PBAI decreased slightly with aging. PCAI did not change obviously with aging. Conclusion The measuring method of anterior and posterior acetabular indexes with the baseline from the thinnest point of acetabulum to the center of femoral head can accurately evaluate the normal development of anterior and posterior acetabulum in children. |
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