低剂量双能量CT诊断膝关节前交叉韧带损伤的临床对照分析  

Clinical Comparative Analysis of Low Dose Dual-energy CT in the Diagnosis of Anterior Cruciate Ligament Injury of Knee Joint

作　　者：柏瑞 黄俊成 何小华 黄文健 郭元星 李凭跃 BAI Rui;HUANG Jun-cheng;HE Xiao-hua;HUANG Wen-jian;GUO Yuan-xing;LI Ping-yue(Department of Radiology,Gosun Medical Imaging Diagnostic Center,Guangzhou 510017,Guangdong Province,China;Department of Radiology,The General Hospital of the Southern Theater,Guangzhou 510010,Guangdong Province,China;Department of Orthopedics,The General Hospital of the Southern Theater,Guangzhou 510010,Guangdong Province,China)

机构地区：[1]高尚医学影像诊断中心放射科,广东广州510017 [2]南部战区总医院放射科,广东广州510010 [3]南部战区总医院骨科,广东广州510010

出　　处：《中国CT和MRI杂志》2022年第10期157-159,共3页Chinese Journal of CT and MRI

摘　　要：目的研究对象取膝关节前交叉韧带受损者,探究低剂量双能量CT诊断的临床作用效果。方法以膝关节损伤者35例为对象,通过对所选病例资料进行回顾性分析,开展双能量CT扫描时,将低剂量参数作为数据,诊断标准是“双能染色减少征”,对比关节镜、MRI检查和CT诊断结果。结果在所选患者中,经“双能染色减少征”诊断,有22例伴前交叉韧带受损,和关节镜检查结果相符共计18例;有13例为正常前交叉韧带,和关节镜检查结果相符共计12例。该征象的诊断敏感性、特异性、阳性预测值在低剂量成像下分别是94.7%、75%、81.8%,阴性预测值为92.3%。Kappa检验结果表明,该方法具有良好的一致性。结论在临床诊断膝关节前交叉韧带受损中,双能CT低剂量扫描参数的开展具有一定可行性。Objective The subjects were selected from the patients with damaged anterior cruciate ligament of knee joint to explore the clinical effect of low-dose dual energy CT diagnosis.Methods Taking 35 cases of knee joint injury as the object,through the retrospective analysis of the selected case data,when carrying out dual energy CT scanning,the low-dose parameters were taken as the data,and the diagnostic standard was"dual energy staining reduction sign".The diagnostic results of arthroscopy,MRI and CT were compared.Results Among the selected patients,22 were diagnosed by"dual energy staining reduction sign"with anterior cruciate ligament damage,which was consistent with the results of arthroscopy in 18 cases;There were 13 cases of normal anterior cruciate ligament,which was consistent with the results of arthroscopy in 12 cases.The diagnostic sensitivity,specificity and positive predictive value of this sign were 94.7%,75%and 81.8%respectively in low-dose imaging,and the negative predictive value was 92.3%.Kappa test results show that the method has good consistency.Conclusion In the clinical diagnosis of knee anterior cruciate ligament injury,the development of dual energy CT low-dose scanning parameters is feasible.

关 键 词：低剂量与双能量 电子计算机断层扫描 膝关节 韧带损伤 

分 类 号：R816.8[医药卫生—放射医学] R686.5[医药卫生—临床医学]