摘要
目的探讨动态对比增强磁共振定量成像(dynamic contrast-enhanced MRI,DCE-MRI)技术对布氏杆菌性脊椎炎的鉴别诊断价值。材料与方法 16例脊椎病变患者(经临床或手术病理证实:11例布氏杆菌性脊椎炎、2例脊椎椎体转移瘤、3例结核性脊椎炎)行T1WI、T2WI、STIR及动态对比增强定量检查,分析其形态、信号特点及容积转运参数(Ktrans)与血管外细胞外间隙容积比(Ve)。结果病变累及腰椎最多。布氏杆菌性脊椎炎在MRI上椎体形态多无明显变化,椎体边缘可见小的骨质破坏及骨质增生。病变椎体T1WI呈低信号,T2WI呈低等或等高信号或低等高混杂信号。STIR呈高信号。增强扫描病变椎体明显强化,与周围正常增强的椎体信号类似或更高。各类脊椎病变的Ktrans值与Ve值的差异均有统计学意义(P<0.05)。结论布氏杆菌性脊椎炎有特征性的磁共振表现,动态对比增强磁共振定量成像对鉴别诊断有重要价值。
Objective：To explore the value ofdynamiccontrastenhanced（DCE） MRI in differential diagnosis of brucellosis spondylitis. Materials and Methods：Sixteen cases with spinal lesions（proved by clinically or histologically： 11 cases were brucellosis spondylitis, 2 cases were vertebral metastases, 3 cases were tuberculous spondylitis） received T1WI, T2WI, STIR and DCE-MRI examination. Morphological and MRI features were analyzed.Results：The lesions were mainly located in the lumbar vertebrae. In the MRI of brucellosis spondylitis, morphology of vertebral body was almost normal. Bone destruction and osteophyte were detected in the rim of vertebral body. The affected vertebral body showed hypointense on T1WI, hypointense, isointense, hyperintense or heterogeneous intense on T2WI and hyperintense on STIR. After injection of contrast media, signal of affected vertebral body was similar to or higher than that of adjacent vertebral body. There were signiifcant differences between the different spinal lesions for Ktrans values and Ve values （P〈0.05）.Conclusion：Brucellosis spondylitism has some MRI characteristics. DCE-MRI has signiifcant value in the differential diagnosis of brucellosis spondylitis.
出处
《磁共振成像》
CAS
CSCD
2015年第8期581-584,共4页
Chinese Journal of Magnetic Resonance Imaging
基金
国家自然科学基金项目(编号:81460259)
关键词
布氏杆菌
脊柱炎
磁共振成像
动态增强
Brucella
Spondylitis
Magnetic resonance imaging
Dynamicenhancement
