利用ROC曲线对1.5T磁共振成像在踝关节运动损伤患者的诊断准确性分析
Using ROC Curve to Analyze the Accuracy of 1.5T MRI in Patients with Ankle Sports Injury

目的：应用ROC曲线分析1.5T磁共振成像诊断踝关节运动损伤患者的准确性。方法：将2018年1月至2019年12月我院收治的100例踝关节运动损伤患者纳入研究，收集患者一般临床资料，并采用1.5T核磁共振对受试者踝关节进行平扫检查，记录患者踝关节骨折、骨挫伤等损伤发生情况，检查结果由2名经验丰富的影像医师对影像结果进行分析及报告，所有患者均行关节镜检查以明确最终诊断，分析1.5T核磁共振成像对踝关节运动损伤的敏感性及诊断价，并应用ROC曲线对1.5T磁共振成像诊断踝关节运动损伤的准确性进行分析。结果：共有21例患者为踝关节骨折，与MRI诊断一致，两种方法检查的一致率为100% (100/100)，具有较高的一致性(Kappa = 1.000, P = 0.000)，敏感性为100%；有65例患者为踝关节韧带损伤，MRI平扫诊断60例，两种方法检查的一致率为89% (89/100)，具有较高的一致性(Kappa = 0.766, P = 0.000)，敏感性为88.24%；对于跟腱断裂的患者，MRI检查亦能正确显示，敏感性为100%。结论：1.5T核磁共振成像对踝关节韧带、肌腱及软骨损伤的诊断具有较高的敏感性及诊断价值，可以有效显示踝关节损伤，安全无创，能为早期临床治疗提供客观依据。
Objective: To use ROC curve to analyze the accuracy of 1.5T magnetic resonance imaging in diagnosing patients with ankle joint sports injuries. Methods: 100 patients with ankle joint sports injuries admitted to our hospital from January 2018 to December 2019 were included in the study, general clinical data of the patients were collected, and 1.5T MRI was used to perform a plain scan of the subjects’ ankles and record the patients’ ankles. For joint fractures, bone contusions and other injuries, the inspection results were analyzed and reported by 2 experienced imaging physicians. All patients underwent arthroscopy to confirm the final diagnosis, and 1.5T MRI to analyze the an-kle joint movement. The sensitivity and diagnostic value of injury, and the use of ROC curve to analyze the accuracy of 1.5T magnetic resonance imaging in the diagnosis of ankle sports injury. Results: A total of 21 patients had ankle fractures, which was consistent with the MRI diagnosis. The consistency rate of the two methods was 100% (100/100), which had a high consistency (Kappa = 1.000, P = 0.000). The sensitivity was 100%; 65 patients had ankle ligament injury, 60 cases were diagnosed by MRI plain scan, and the agreement rate of the two methods was 89% (89/100), which was highly consistent (Kappa = 0.766, P = 0.000), the sensitivity is 88.24%; for patients with Achilles tendon rupture, MRI can also correctly show the sensitivity is 100%. Conclusion: 1.5T MRI has high sensitivity and diagnostic value for the diagnosis of ankle ligament, tendon and cartilage injuries. It can effectively show ankle injuries, is safe and noninvasive, and can provide objective evidence for early clinical treatment.