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目的:分析0.35T低场强磁共振对膝关节韧带损伤临床诊断价值。方法:对2014年9月至2016年5月于南雄市人民医院影像科行0.35T低场强磁共振扫描的98例膝关节韧带损伤患者进行探讨,以手术结果为金标准,了解入组患者的膝关节韧带损伤类型构成情况,分析0.35T低场强磁共振的敏感性、特异性、准确性、阳性预测值和阴性预测值。结果:以手术结果为金标准,检测出MRI的灵敏度94.94%,特异度89.47%,阳性预测值97.40%,阴性预测值80.95%;手术所见结果中,共出现112条韧带损伤,其中侧副韧带损伤共62条,十字交叉韧带损伤共50条;侧副韧带损伤MRI影像学特点为,韧带连续性尚存或韧带中断,侧副韧带内信号局部或弥散混杂性肿胀,信号增强或韧带断裂端移位扭曲;十字交叉韧带损伤MRI影像学特点为,韧带信号部分以及完全在中断,断裂处形状为挛缩或撕裂状,韧带内信号混杂和弥散。结论:0.35T低场强磁共振诊断膝关节韧带损伤,具有较高灵敏度、特异度,是用于膝关节韧带损伤术前评估的较佳方法。
OBJECTIVE: To analyze the clinical value of 0.35T low field strength MRI in the diagnosis of knee joint ligament injury. Methods: From September 2014 to May 2016, 98 patients with knee joint ligament injury who underwent 0.35T low-field MR scan in Nanxiong People’s Hospital were studied. The surgical results were used as the gold standard to understand Patients with knee joint ligament injury constitute the situation, 0.35T low field strength magnetic resonance magnetic resonance sensitivity, specificity, accuracy, positive predictive value and negative predictive value. Results: The sensitivity of 94.94%, specificity of 89.47%, positive predictive value of 97.40% and negative predictive value of 80.95% were detected with the surgical results as the gold standard. A total of 112 ligament injuries were found in the surgical findings, of which side There were 62 ligament injuries and 50 cruciate ligament injuries. The MRI features of the collateral ligament injury were that the continuity of the ligaments or the ligament break, the local or diffuse mixed swelling of the signals in the collateral ligament, the signal enhancement or ligament rupture End displacement distortion; cruciate ligament injury MRI imaging features, ligament signal part and completely interrupted, the shape of the fracture contracture or tear, the signal within the ligament mixed and dispersed. Conclusion: 0.35T low field strength magnetic resonance imaging is a better method for the preoperative assessment of knee ligament injury in the diagnosis of knee joint ligament injury with higher sensitivity and specificity.