无症状成人前凸型颈椎DR与MRI矢状位参数比较

Comparative analysis of sagittal parameters of DR and MRI of asymptomatic adults with cervical lordosis

目的分析无症状成人前凸型颈椎DR与MRI矢状位参数的差异性及相关性。方法收集59例无症状成人前凸型颈椎体检者的DR、MRI影像资料,并在DR、MRI影像上分别测量C 2~C 7 Cobb角、胸1椎体倾斜角(T1 Slope,TS)、胸廓入口角(thoracic inlet angle,TIA)及颈椎倾斜角(neck nilting,NT)等颈椎矢状位参数,比较DR、MRI两种影像测量参数的差异性,采用Pearson相关性检验对DR、MRI两种影像测量参数进行相关性分析,应用线性回归建立DR、MRI两种测量方式参数的线性模型。结果DR影像上测量的C 2~C 7 Cobb角、NT平均值较MRI影像上测量的C 2~C 7 Cobb角、NT平均值大,差异均有统计学意义(P<0.05)。DR测量结果显示TIA与NT、TS呈正相关(r值分别为0.597、0.662,P<0.05)。MRI测量结果显示TIA与TS、TS与NT呈正相关(r值分别为0.530、0.275,P<0.05)。DR、MRI影像中所测量的颈椎矢状面参数C 2~C 7 Cobb角、TS、TIA和NT间均呈正相关(r值分别为0.680、0.741、0.826、0.810,P<0.05)。结论C 2~C 7 Cobb角、NT、TS和TIA在DR、MRI影像上测量结果间存在显著相关性,颈椎MRI矢状位参数可以用来评估颈椎矢状位平衡状况。

Objective To investigate the difference and correlation of sagittal parameters between DR and MRI of asymptomatic adults with cervical lordosis.Methods The data of DR and MRI image about fifty-nine asymptomatic adults with cervical lordosis were collected.The sagittal parameters of the cervical spine(C 2~C 7 Cobb angle,T1 slope,TS,TIA and NT)were measured on the DR and MRI images respectively,and compared.Moreover,Pearson correlation test was used to analyze the correlation between DR and MRI parameters and linear regression was used to establish the linear model of DR and MRI parameters.Results The mean values of C 2~C 7 Cobb angle and NT on DR images were significantly higher than those on MRI images(P<0.05).DR results showed that TIA was positively correlated with NT and TS(P<0.05).MRI results showed that TIA was positively correlated with TS and TS positively correlated with NT(P<0.05).Moreover,C 2~C 7 Cobb angle,TS,TIA and NT were positively correlated with each other(P<0.05).Conclusion There is a significant correlation among the measurement results of C 2~C 7 Cobb angle,NT,TS and TIA on DR and MRI images.The sagittal parameters of cervical MRI can be used to evaluate the sagittal balance of cervical spine.