Application value of Doppler ultrasound in early active axial spondyloarthropathy
10.13929/j.1003-3289.201611078
- VernacularTitle:多普勒超声在早期活动性中轴型脊柱关节病中的应用
- Author:
Lu WANG
;
Li CHEN
- Keywords:
Spondyloarthropathy;
Sacroiliitis;
Ultrasonography,Doppler,color
- From:Chinese Journal of Medical Imaging Technology
2017;33(8):1256-1259
- CountryChina
- Language:Chinese
-
Abstract:
Objective s To investigate the value of Doppler ultrasound in diagnosing active sacroiliitis of axial spondyloarthropathy (axSpA) patients.Methods The Doppler ultrasound and MRI data of 51 patients with early axSpA was retrospectively analyzed.According to MRI results,axSpA patients were divided into active sacroiliitis (active group) and inactive sacroiliitis (inactive group).The color flow display and blood flow resistance index (RI) were compared.Considering MRI as the diagnostic standard,ROC curve was used to evaluate the diagnostic efficacy of RI in detecting active sacroiliitis.Results There were 32 cases wth 58 joints (6 cases were single active sacroiliitis) in activity group and 19 cases with 38 joints in inactivity group.The flow signals demonstration rate of sacroiliac joint in activity group (51/58,87.93％) was higher than that in inactive group (26/38,68.42％;x2 =5.505,P=0.019).There was no statistical difference of the indegree of blood flow between the two groups (Z=-1.93,P=0.053).RI in active group (0.59±0.08) was lower than that in inactive group (0.71±0.09;t=-6.04;P＜0.001).Taking RI=0.64 for diagnosis of active sacoriliitis in axSpA patients,the sensitivity,specificity and accuracy rate were 80.8％,74.5％ and 78.7％,respectively.Conclusion Through observing abnormal blood flow signals around and internal the sacroiliac joints,ultrasonography can response active sacroiliitis in axSpA patients with higher accuracy.
