摘要
目的:评价MR增强扫描对膝关节前交叉韧带(ACL)部分撕裂的诊断价值。方法:回顾性分析有手术资料的56例患者的膝关节平扫加增强MR扫描图像,分析计算MRI对ACL部分撕裂的诊断价值。结果:MRI平扫诊断ACL 部分撕裂的诊断符合率、特异度、敏感度分别为73．2％、89．2％、82．1％;MRI平扫加增强扫描诊断ACL部分撕裂的诊断符合率、特异度、敏感度分别为91．1％、100％、82．1％。MR平扫加增强对诊断前交叉韧带部分撕裂的诊断符合率明显高于单纯MR平扫,差异有显著性意义(P<0．05);而两者间诊断特异度及敏感度的差异无显著性意义(P>0．05)。结论: 膝关节MR平扫加增强扫描对诊断ACL部分撕裂优于常规MRI扫描。
Objective： To study the clinical value of Gd-DTPA enhanced MRI in partial anterior cruciate ligament （ACL） tear of knee joint. Methods： 56 cases of conventional MRI and Gd-DTPA enhanced MRI of knee joint proved by surgery were retrospectively reviewed. The number of true positive （TP）, true negative （TN）, false positive （FP） and false negative （FN） cases of partial ACL tear diagnosed by conventional MRI and GD-DTPA enhanced MRI were noted,and the sensitivity, specificity, accuracy, positive predictive value （PPV）, negative predictive value （NPV） were analyzed statistically. Results： 28 cases had partial ACL tear proved by surgery. The sensitivity, specificity, accuracy,PPV,NPV for partial tear of ACL by conventional MRI was 73.2 %, 89.2 % and 82.1% respectively. The sensitivity, specificity,accuracy, PPV, NPV by conventional MRI combined with GD-DTPA enhancement was 91. 1%, 100%, 82. 1%respectively. When conventional MRI compared with conventional MRI combined with Gd-DTPA enhancement, there were significant statistical difference in the diagnostic accuracy and sensitivity （P〈0.05） of partial ACL tear of knee joint. Conclusion：Gd-DTPA enhanced MRI combined with converntional MRI is superior to conventional in detecting partial ACL tear of knee joint.
出处
《放射学实践》
2006年第1期70-73,共4页
Radiologic Practice
关键词
交叉韧带
前
膝关节
磁共振成像
Cruciate llgament,anterior
Knee ioint
Magnetic resonance imaging
