摘要
目的分析股骨头坏死的磁共振成像(MRI)征象及其诊断价值。方法选取2018年1月至2021年2月该院121例股骨头坏死患者(共192个股骨头),均行MRI与CT检查,分析其MRI征象特征,比较两种检查方式对股骨头坏死的总检出率、分期诊断情况及典型阳性征象检出率。结果股骨头坏死患者MRI征象以T1加权像(T1WI)新月形坏死区(58.33%)、T2加权像(T2WI)局限性信号增强(57.29%)、T2WI星月形高信号区(48.96%)及T2WI双线征(47.92%)为主;MRI对股骨头坏死的总检出率明显高于CT(100.00%vs.80.21%,P<0.05);MRI对Ⅰ期(100.00%vs.40.74%)、Ⅱ期(100.00%vs.66.67%)股骨头坏死的检出率明显高于CT(P<0.05),两种检查方式对Ⅲ期、Ⅳ期的检出率无明显差异(P>0.05);MRI对骨小梁模糊(69.79%vs.33.85%)、线样征(65.62%vs.10.94%)及骨髓水肿(66.67%vs.1.04%)的检出率明显高于CT(P<0.05),两种检查方式对局部囊变的检出率无明显差异(P>0.05)。结论股骨头坏死的MRI征象常见为T1WI新月形坏死区、T2WI局限性信号增强、星月形高信号区及双线征,其对早期股骨头坏死及典型阳性征象的检出率高于CT。
Objective To analyze the magnetic resonance imaging(MRI)signs of femoral head necrosis and its diagnostic value.Methods A total of 121 patients with femoral head necrosis(192 femoral heads in total)who were admitted to the hospital from January 2018 to February 2021 were selected.All underwent MRI and computed tomography(CT)examinations,and their MRI signs were analyzed.The total detection rate of femoral head necrosis,the staging diagnosis and the detection rate of typical positive signs were compared between the two examination methods.Results The MRI signs of patients with femoral head necrosis mainly included crescent-shaped necrotic area on T1 weighted images(T1WI,accounting for 58.33%),localized signal enhancement on T2 weighted images(T2WI,accounting for 57.29%),star or moon-shaped high signal area on T2WI(accounting for 48.96%)and double-line sign on T2WI(accounting for 47.92%).The total detection rate of femoral head necrosis by MRI was significantly higher than that by CT(100.00%vs.80.21%,P<0.05).The detection rates of femoral head necrosis by MRI in stageⅠ(100.00%vs.40.74%)andⅡ(100.00%vs.66.67%)were significantly higher than those by CT(P<0.05).There was no significant difference in the detection rates of stageⅢand stageⅣbetween the two methods(P>0.05).The detection rates of blurred bone trabecula(69.79%vs.33.85%),line-like sign(65.62%vs.10.94%)and bone marrow edema(66.67%vs.1.04%)by MRI were significantly higher than those by CT(P<0.05).There was no significant difference in the detection rate of local cystic degeneration between the two methods(P>0.05).Conclusion The common MRI signs of femoral head necrosis are crescent shaped necrosis area on T1WI,localized signal enhancement on T2WI,and star or moon-shaped high signal area and double-line sign.Compared with CT,the detection rates of early femoral head necrosis and typical positive signs by MRI are higher.
作者
任静
杜飞舟
刘烨
张璐
张梦诗
黎庆
盛金平
REN Jing;DU Feizhou;LIU Ye;ZHANG Lu;ZHANG Mengshi;LI Qing;SHENG Jinping(Department of Radiology,the General Hospital of Western Theater Command,Chengdu,Sichuan 610083,China)
出处
《重庆医学》
CAS
2023年第9期1343-1346,1351,共5页
Chongqing medicine
基金
四川省科技厅应用基础研究课题(2019YJ0278)。
关键词
股骨头坏死
磁共振成像
计算机断层扫描
征象
诊断
femoral head necrosis
magnetic resonance imaging
computed tomography
sign
diagnosis
作者简介
任静(1992-),初级技师,本科,主要从事放射诊断技术研究;通信作者:盛金平,E-mail:Johnson_sheng@163.com。
