3.0T磁共振不同成像技术对膝骨关节炎骨髓病变SNR和CNR对比分析  

The Comparative Study and Clinical Application of MR Sequences Imaging on Bone Marrow Changes of Knee Osteoarthritis

作　　者：董玉茹[1] 王宏[1] 梁莹[1] 董悦[1] 马巧稚[1] 张超[1] 

机构地区：[1]武警总医院磁共振中心,北京100039

出　　处：《中国CT和MRI杂志》2015年第6期92-94,共3页Chinese Journal of CT and MRI

基　　金：国家自然科学基金;基金号:31200838

摘　　要：目的通过比较膝关节骨髓信噪比(SNR)和对比噪声比(CNR),探讨3.0T磁共振常规T1加权像(T1-sag)、三维容积内插快速扰相序列(T1-vibe)、质子密度加权像(PD-sag)和常规T2加权脂肪抑制像(T2-fs-sag)4种扫描序列对膝关节骨髓损伤成像的相对最佳序列。方法选取我院2014年1月至2014年6月行膝骨关节骨髓磁共振检查膝骨关节炎患者36例,均行T1-sag、T1-vibe、PD-sag和T2-fs-sag扫描。结果采用T1-sag、T1-vibe、PD-sag和T2-fs-sag序列扫描时,膝骨关节骨髓SNR分别为111.82±61.39、14.53±4.73、77.57±39.98和189.44±89.98;CNR分别为194.27±92.43、14.08±15.39、79.23±40.29和153.29±81.40;采用T2-fs-sag扫描时的SNR最高,其次为T1-sag序列、PD-sag序列,T1-vibe序列扫描时的SNR最低;采用T1-sag扫描时的CNR最高,其次为T2-fs-sag序列、PD-sag序列,T1-vibe序列扫描时的CNR最低。结论MR序列膝关节骨髓成像可为临床提供关节骨髓病变信息,T2-fs-sag和T1-sag序列是显示膝关节骨髓损伤的优秀序列。Objective To compare SNR and CNR of bone marrow changes of knee osteoarthritis between four sequences, such as T1-sag, T1-vibe, PD-sag and T2-fs-sag, so as to find out the optimal sequence to diagnose the disease.Methods 36 patients suffering knee osteoarthritis were selected to perform T1-sag, T1-vibe, PD-sag and T2-fs-sag scanning between January to June, 2014 in our hospital.Results The values of SNR were 111.82±61.39, 14.53±4.73, 77.57±39.98 and 189.44±89.98 respectively, when scanned by T1-sag, T1-vibe, PD-sag and T2-fs-sag sequences. And the values of CNR were 194.27±92.43, 14.08±15.39, 79.23±40.29 and 153.29±81.40 respectively. The value of SNR was highest when scanned by T2-fs-sag, and then followed by T1-sag, PD-sag and T1-vibe. The value of CNR was highest when scanned by T1-sag, and then followed by T2-fs-sag, PD-sag and T1-vibe.Conclusion MR sequences imaging could offer information of bone marrow changes of knee osteoarthritis, and T2-fs-sag and T1-sag might be the relative optimal sequences to diagnose the disease.

关 键 词：磁共振 关节炎 骨髓损伤 信噪比 对比噪声比 

分 类 号：R681.2[医药卫生—骨科学] R445.2[医药卫生—外科学]