磁共振椎管水成像126例分析  

MR myelography: analysis of 126 cases

作　　者：王武[1] 张雪哲[1] 卢延[1] 洪闻[1] 陆立[1] 黄振国[1] 任安[1] 

机构地区：[1]中日友好医院放射诊断科,北京100029

出　　处：《中华医学杂志》2000年第3期183-186,共4页National Medical Journal of China

基　　金：国家教育部留学回国人员科研启动基金资助项目!( 1997 43 6)

摘　　要：目的　探讨磁共振椎管水成像 (MRM)对揭示椎管内病变部位及原因的价值与限度。方法　采用三维 (3D)快速自旋回波 (FSE)加脂肪抑制技术作冠状面重T2加权椎管水成像 12 6例 ,包括枕延池 6例、颈段 18例、胸段 19例、腰段 83例。所有图像均经 3D最大信号强度投影 (MIP)后处理。结果　 90 .5 % (114/ 12 6例 )图像质量优良。MRM阳性 10 1例 (80 .2 % ,10 6人次 )。硬膜外病变 5 1人次 ,硬膜下 30人次 ,髓内 2 3人次。 6 6例手术前后对比 ,本组 10 0 %定位正确 ,定性正确率 91.3%。结论　重T2加权FSE序列MR椎管水成像是可靠的、非侵袭性的检查方法 ,它可代替常规X线脊髓造影和CT脊髓造影 ,还可解决上述检查无法解决的一些难题。Objective To investigate the value and limitation of MR myelography (MRM) in depicting the spinal canal obstruction. Methods Heavily T2 weighted coronal MR myelography was performed with 3D fast spin echo (FSE) and fat suppression sequence in 126 cases, including 6 cerebellomedullary cistern, 18 cervical, 19 thoracic and 83 lumbar cases. The resulting slice were then projected into a composite image using a standard maxium intensity projection (MIP)algorithm. Results 90.5% (114/126) of MRM yielded reproducible high quality image of the spinal thecal sac. 106 lesions (extradural, intradu ral, intramedullary) were detected in 101 cases (80.2%). The level and degree of spinal canal obstruction were visualized and confirmed by operation in 66 cases with a high sensitivity of 100%, and a diagnostic accuracy of 91.3%. Conclusion Heavily T2 FSE MR myelography is a noninvasive and reliable method. MRM surpasses conventional and CT myelography and could replace them in some degree.

关 键 词：脊髓 磁共振成像 MRM 病例分析 

分 类 号：R445.2[医药卫生—影像医学与核医学]