无症状髋臼唇的MR表现及变异研究  

MR imaging of the acetabular labrum in asymptomatic hips

作　　者：赵建[1] 郭智萍[1] 朱瑾[2] 李石玲[1] 孙英彩[1] 马晓晖[1] 赵振江[1] 张敏[1] 

机构地区：[1]河北医科大学第三医院CTMR室,河北石家庄050051 [2]河北医科大学第三医院B超室,河北石家庄050051

出　　处：《中国医学影像技术》2007年第5期727-730,共4页Chinese Journal of Medical Imaging Technology

基　　金：河北省卫生厅科研基金资助(05134);河北省科技厅科技攻关课题(052761202)

摘　　要：目的 采用放射状扫描方法及FLASH-2D序列显示各部位髋臼唇的形态信号，观察不同年龄组及不同解剖部位无症状髋臼唇的MRI特征，研究其形态及信号与年龄及解剖部位的相关性。方法 选择无任何髋关节症状的志愿者为研究对象进行放射状MRI检查，共54个髋关节，男33例，女21例，年龄17-70岁。分别观测髋臼唇断面的形态，边缘及信号情况。对数据进行统计学处理。结果 54个髋关节共得到972个髋臼唇断面图像，其中三角形828个（85.19%）。不规则形119个（12.24%）。缺如型25个（2.57%）。除去25个缺如型的髋臼唇，947个髋臼唇断面图像中757个髋臼唇断面信号均匀（79.9%），156个髋臼唇呈轻度高信号（16.5%），34个髋臼唇断面呈明显高信号（3.6%）。不同年龄组之间髋臼唇形态及信号具有显著性差异，持重面和非持重面之间髋臼唇形态不具有显著性差异，持重面和非持重面之间髋臼唇信号具有显著性差异。结论 三角形是最常见的髋臼唇类型。随年龄的增长，三角形髋臼唇出现频率逐渐降低，不规则形及缺如型髋臼唇出现频率逐渐增高，髋臼唇出现异常信号的频率逐渐增高。持重面髋臼唇异常信号出现的频率高于非持重面。Objective To determine the normal and variation of the acetabular labra in asymptomatic hips by means of a radial-sequence MR imaging technique with FLASH-2D sequence, and to study the relationship between the shape and signal of the labrum with patient＇s age in corresponding the segment of the labrum. Methods Fifty-four asymptomatic volunteers were selected, in which there were 33 male and 21 female, aged from 17-70 years. The shape and edge and MRI signal of the acetabular labra were evaluated by three experienced MR doctors. Statistical analysis were used on the data. Results 972 images were obtained in 54 hips, The shape of the labrum was triangular in 85.19% （828/972） of the labral segments, irregular in 12.24% （119/972）, and absence of labrum in 2.57% （25/972）. Except for absence labra, A homogeneous low signal intensity was observed in 79.9% （757/947） of the labral segments. Labrum with slightly high signal intensity was observed in 16.5% （156/947）. Labrum with distinct high signal intensity was observed in 3.6% （34/947）. There was significant difference about the shape of the labrum between different age groups （P〈0. 005）. There was significant difference between different age groups of the signal of the labra （P〈0. 005）. There was no significant difference between the weightbearing portion group and the non-weight-bearing portion group of the shape of the labrum （P=0.06）. There was significant difference between the weight-bearing portion group and the non-weight-bearing portion group of the signal of the labrum （P〈0. 0001）. Conclusion Triangle was the dominant shape on MR imaging. Occurrence of the triangular shape decreased with the age. The frequency of irregular labrum and absence labrum increased with the age. The frequency of labrum high signal intensity increased with the age. High signal occurred frequently in the weight-bearing portion group.

关 键 词：髋臼唇 无症状 磁共振成像 

分 类 号：R681.3[医药卫生—骨科学] R445.1[医药卫生—外科学]