摘要
目的探讨三维质子密度不同翻转角步进最佳对比应用完善取样（3D PD-SPACE）序列评估正常膝后外侧角（PLC）韧带结构的价值,提高对相应结构的认识。方法 35名无症状志愿者行常规3个平面二维质子密度加权（2D PDWI）序列及3D PD-SPACE序列检查,采用4分法评价2个序列显示正常PLC的外侧副韧带、腘腓韧带、弓状韧带和小豆腓骨韧带的价值。结合薄层原始图像和多向调整多平面重组（MPR）分析各韧带的MRI表现和解剖学参数。结果 3D PD-SPACE序列显示外侧副韧带、腘腓韧带、弓状韧带和小豆腓骨韧带的评分均优于2D PDWI序列（P均〈0.05）。3D PD-SPACE序列多向调整MPR对外副韧带、腘腓韧带、弓状韧带、小豆腓骨韧带的显示率分别为100%（35/35）、100%（35/35）、74.3%（26/35）和51.4%（18/35）。正常外侧副韧带的长度、宽度和厚度分别为（51.6±7.5）mm、（4.0±1.0）mm及（4.9±1.2）mm,腘腓韧带为（13.8±2.6）mm、（8.5±3.7）mm及（2.6±0.49）mm,弓状韧带中部分别为（20.9±5.8）mm、（12.2±2.8）mm及（2.0±0.72）mm,小豆腓骨韧带则为（32.3±5.6）mm、（2.4±0.58）mm及（1.4±0.26）mm;各韧带不同性别间和左右间差异无统计学意义（P均〉0.05）。结论3D PD-SPACE序列结合多向调整MPR能准确显示PLC小韧带的解剖形态,是评估该类结构的有效手段。
Objective To evaluate the utility of the 3 D PD-SPACE sequence in normal ligaments of posterior lateral corner of knee. Methods 2 D PDWI and 3 D PD-SPACE images were obtained in 35 asymptomatic volunteers. The scores of 4 ligaments（ the lateral collateral ligament,popliteofibular ligament,arcuate ligament and fabellofibular ligament） were used to compare the diagnostic performance of SPACE with that of 2 D PDWI. MRI features and anatomic parameters of each ligament were analyzed with the combination of thin original images and multidirection adjusted multiplanar reconstruction.Results The scores for ligaments display efficiency of 3 D PD-SPACE images were better than 2 D PDWI sequence（ all P 0. 05）. In the images of 3 D PD-SPACE sequence and multidirection adjusted multiplanar reconstruction,the lateral collateral ligament and popliteofibular ligament could be displayed in all cases,arcuate ligament and fabellofibular ligament could be seen in 74. 3%（ 26/35） and 51. 4%（ 18/35） cases. The length,width and thickness of normal lateral collateral ligament were（ 51. 6 ± 7. 5） mm,（ 4. 0 ± 1. 0） mm and（ 4. 9 ± 1. 2） mm respectively,which were（ 13. 8 ± 2. 6） mm,（ 8. 5 ±3. 7） mm and（ 2. 6 ± 0. 49） mm in popliteofibular ligament,（ 20. 9 ± 5. 8） mm,（ 12. 2 ± 2. 8） mm and（ 2. 0 ± 0. 72） mm in arcuate ligament,and（ 32. 3 ± 5. 6） mm,（ 2. 4 ± 0. 58） mm and（ 1. 4 ± 0. 26） mm for fabellofibular ligament. There were no significant differences between different gender and different sides（ all P 0. 05）. Conclusion The 3 D PDSPACE sequence combining multidirection adjusted multiplanar reconstruction can intactly display the small ligament structures of posterolateral corner.
作者
赵晓梅
黄耀渠
伍琼慧
樊长姝
ZHAO Xiaomei;HUANG Yaoqu;WU Qionghui;et al.(Room of MRI, Foshan Hospital of Traditional Chinese Medicine, Foshan 528000, P. R. Chin)
出处
《临床放射学杂志》
CSCD
北大核心
2018年第3期476-480,共5页
Journal of Clinical Radiology
基金
广东省科技计划项目(编号:2014A020221096)
关键词
膝关节
韧带
解剖学
磁共振成像
Knee joint Ligament Anatomy Magnetic resonance imaging
