骨质疏松和转移瘤致脊柱压缩性骨折的低场MRI鉴别诊断  

Significance of low field MRI for differentiating compression fracture caused by spinal osteoporosis and metastatic tumors

作　　者：王生锋[1] 胡振民[1] 蒋健强[1] 陆锦贵[1] 

机构地区：[1]南通市中医院,南通226001

出　　处：《上海医药》2012年第6期30-31,47,共3页Shanghai Medical & Pharmaceutical Journal

摘　　要：目的:评价脊柱骨质疏松和转移瘤致压缩性骨折的MRI表现及鉴别诊断价值。方法:回顾性分析经临床随访证实的骨质疏松性骨折34例及病理证实的转移性骨折26例,所有病例均行低场MRI(0.35T)T1WI、T2WI及脂肪抑制T2WI扫描,部分行Gd-DTPA增强扫描。数据统计采用χ2检验。结果:压缩椎体后缘成角、内见残留正常骨髓信号多见于骨质疏松性骨折(P<0.01);压缩椎体后缘膨隆、增强后均匀或不均匀强化、附件受累及椎旁软组织肿块多见于转移性骨折(P<0.01)。结论:MRI对鉴别骨质疏松性和转移性压缩性骨折具有重要的价值。Objective： To evaluate the significance of low field MRI for differentiating compression fractures caused by spinal osteoporosis and metastatic tumors. Methods： Twenty six patients with pathologically proved spinal metastatic compression fractures and thirty four patients with clinically proved vertebral osteoporotic compression fractures were retrospectively analyzed and low field （0.35T） MR imaging, T1WI, T2WI and fat suppression T2WI scanning were performed in all of the cases, part of cases had Gd-DTPA enhancement scanning. Results： Residual normal bone marrow signals of the vertebral body and the posterior margin of the vertebral body compression angle were mostly found in osteoporotic compression fractures （P〈0.01） , while expansive posterior border of the vertebral body, vertebral arch involvement, paravertebral soft tissue mass, and heterogeneous enhancement of the vertebral body after contrast agent administration were mostly found in metastatic compression fractures （P〈0.01） . Conclusion： Low field MRI has important significance in differentiating vertebral osteoporotic compression fractures from metastatic compression fractures.

关 键 词：脊柱 压缩骨折 骨质疏松 转移瘤 磁共振成像 

分 类 号：R445.2[医药卫生—影像医学与核医学] R683.2[医药卫生—诊断学]