摘要
目的提高对膝关节前交叉韧带前内侧束和后外侧束的影像认识，并探讨其3．0TMR的理想常规成像显示平面。方法回顾性分析149例正常膝关节的3．0TMR图像，采用X2分割法分析前交叉韧带、前内侧束和后外侧束双束结构及双束上、中、下各段在MR矢状面、冠状面、横断面各成像平面显示率的差异。结果前交叉韧带前内侧束和后外侧束双束结构显示率，横断面（115／149，77．2％）与冠状面（103／149，69．1％）比较，X2=2．4606，P〉0．0125；横断面、冠状面分别与矢状面（21／149，14．1％）比较，x2值分别为119．5138、92．8695，P值均〈0．0125。前内侧束和后外侧束双束上段显示率，横断面（104／149，69．8％）与冠状面（7／149，4．7％）、矢状面（0／149，0）及冠状面与矢状面分别比较，x2值分别为135．0813、159．7526、7．1684，P值均〈0．0125。前内侧束和后外侧束双束中段显示率，横断面（108／149，72．5％）与冠状面（94／149，63．1％）比较，X2=3．0120，P〉0．0125；横断面、冠状面分别与矢状面（10／149，6．7％）比较，x2值分别为134．7454、104．2173，P值均〈0．0125。前内侧束和后外侧束双束下段显示率，横断面（103／149，69．1％）与冠状面（110／149，73．8％）比较，x2=0．8065，P〉0．0125；横断面、冠状面分别与矢状面（18／149，12．1％）比较，Xz值分别为100．5300、115．9132，P值均〈0．0125。前交叉韧带双柬各段在MRI各序列上均呈低信号，形态、走行正常。结论3．0TMR常规扫描平面能够在一定程度上显示前交叉韧带的双束结构，横断面和冠状面是较为理想的显像平面。
Objective To improve the visualization of anteromedial and posterolateral bundles of anterior crueiate ligament （ACL） and investigate the optimal MRI plane for the bundles at a 3.0 T MR scanner. Methods MR images of 149 knee joints were reviewed retrospectively. Display rates of AMB, PLB and their different parts （ the top portion, the middle portion and the low portion） on MR different planes including axial, sagittal and coronal planes were analyzed and their differences were compared with the X2 section method. Results There was no statistical difference in the display rates of two bundles of ACL between axial plane （ 115/149, 77.2% ） and coronal plane （ 103/149, 69. 1% ） （ X2 = 2. 4606, P 〉 0. 0125 ）. Statistical differences were found between axial and sagittal plane, coronal plane and sagittal plane （21/149, 14. 1% ） （X2 = 119. 5138, 92. 8695 respectively, P 〈0. 0125）. There was a statistical difference for the top portion of ACL between axial plane （104/149, 69. 8% ） and coronal plane, sagittal （0/149, 0） and coronal planes （7/149, 4.7% ） （ X2 = 135.081, 159.7526 respectively, P 〈 0. 0125 ）, between sagittal and coronal planes （ X2 = 7. 1684, P 〈 0. 0125 ）. For the middle portion of ACL, there was no statistical difference between axial plane （108/149, 72. 5% ） and coronal plane （94/149, 63.1% ） （X2 = 3. 0120, P〉 0. 0125 ）, while statistical differences were found between axial and sagittal plane, coronal planes and sagittal plane （ 10/149, 6.7% ） （ X2 = 134. 7454, 104. 2173 respectively, P 〈 0. 0125 ）. For the low portion of ACL, there was no statistical difference between axial plane （103/149, 69. 1 % ） and coronal plane （ 101/149, 73.8% ） （ Xz = 0. 8065, P 〉 0. 0125 ）, while statistical differences were detected between axial and sagittal plane, eoronal planes and sagittal plane （18/149, 12. 1% ） （X2 = 100. 5300,115. 9132, P 〈 0. 0125 ）. The different parts of ACL displayed low intensity on different MR planes and normal morphology. Conclusions ACL can be displayed on conventional MR planes at a 3.0 T MR scanner to some extent. Axial and coronal planes might be the optimal MRI planes for ACL and its two bundles.
出处
《中华放射学杂志》
CAS
CSCD
北大核心
2012年第5期445-448,共4页
Chinese Journal of Radiology
关键词
磁共振成像
前交叉韧带
膝关节
Magnetic resonance imaging
Anterior cruciate ligament
Knee joint
