摘要
目的:探讨诊断本病的MRI特点与病理学关系及最佳影像学手段,以提高本病的综合影像诊断水平。方法:回顾性分析23例游离型椎间盘突出的CT和MRI表现特点。CT组16例,MRI组23例,同时行CT及MRI检查16例。结果:16例CT表现为椎管内硬膜囊前高密度影边缘较清,4例显示游离碎片与椎间盘呈细窄颈相连。MRI组中,7例为T1WI、T2WI均呈低信号(与脊髓相比)边缘清;13例T1WI呈等信号,T2WI上呈低或稍高信号,稍高信号位于周围,低信号位于中心部分,边缘欠清;3例T1WI呈稍高信号,T2WI上呈等信号。12例增强扫描中,7例于周边见轻度强化,中央无强化,3例无明显对比强化,2例呈均匀轻度强化。结论:游离型椎间盘突出的影像学诊断以MRI为最佳,MRI信号特征能充分反映其病理的改变,仔细分析平扫信号特点即可明确的诊断。
Objective： To discuss characteristics of MPd and the pathology relations and the best images of sequestered disc herniation, for improve on comprehensive imaging diagnosis.Methods：Characteristics of CT and MRI of 23 cases sequestered disc hemiation by retrospectively analysed, 16 cases had CT, 23 cases had MRI, 16 cases both had CT and MRI examinations. Results： 16 disk fragments of CT shows the high-density shadow before dural sac with clear boundary. Disk fragments of 4 cases connected with the disc. In MRI group, 7 cases exhibited low signal intensity with clear boundary on T1WI and T2WI. 13 cases shows low signal intensity on T1WI and low signal intensity （center part） or slightly high signal intensity （periphery） on T2WI, 3 cases shows slightly high signal intensity on T1WI and intermediate signal intensity on T2WI. Enhancement scanning of MPd shows slight enhancement in perimeter （7/12）, no enhancement （3/ 12）, unifonnity slight enhancement （2/12）. Conclusion MRI is the best imaging examination for imaging diagnosis of sequestered disc herniation, signal characteristic of MRI can full reflect pathological change of disk fragments to anatomize signal characteristic of plain scan can definite diagnose sequestered disc hemiation.
出处
《医学影像学杂志》
2006年第2期179-181,共3页
Journal of Medical Imaging
关键词
椎间盘移位
影像学诊断
Intervertebral disk displacement
Imaging diagnosis
