强直性脊柱炎早期骶髂关节炎的DWI诊断价值

DWI Diagnostic Value of Early Diagnosis of Ankylosing Spondylitis

目的:研究磁共振弥散加权成像(DWI)在强直性脊柱炎患者早期骶髂关节炎中的应用价值,探讨通过测量表观扩散系数(ADC)值定量分析强直性脊柱炎早期骶髂关节炎的可行性。材料与方法:分别对20例临床怀疑强直性脊柱炎患者和20例健康志愿者行磁共振弥散加权成像(DWI),分析双侧骶髂关节面下弥散有无异常,并分别测量其异常以及正常区域ADC值。结果:观察组双侧骶髂关节面下发现弥散异常者20例,对照组双侧骶髂关节面下发现弥散异常者3例,观察组骶髂关节面下弥散异常区域ADC值显著高于对照组。结论:DWI对强直性脊柱炎患者早期骶髂关节炎改变敏感,通过测量ADC值能实现骶髂关节炎的定量研究,对早期发现病变具有较高价值。

Purpose： To evaluate the value of diffusion weighted imaging in diagnosing early ankylosing spondylitis,To investigate the feasibility of early ankylosing spondylitis（ AS） by measuring ADC. Materials and Methods： All of 20 patients of ankylosing spondylitis and 20 normal volunteers were performed with routine DWI scannin. Analysis of DWI performance and measuring ADC with the abnormal and normal area. Conclusion： 20 patients showed sacroiliac joints abnormal signal and 3 normal volunteers showd sacroiliac joints abnormal signal,The ADC values of the lesion group were higher than that of control group. Combined DWI is sensitive to Ankylosing spondylitis patients early sacroiliac arthritis,by measuring the ADC values can quantitative sacroiliac arthritis and it has a high value for found lesions as soon as possible.