| 钟心,王宏,董玉茹,董悦.颅眶沟通性肿瘤的MRI诊断(附18例报告)[J].中国医学影像技术,2005,21(11):1690~1692 |
| 颅眶沟通性肿瘤的MRI诊断(附18例报告) |
| MRI diagnosis of craniorbital tumors: report of 18 cases |
| 投稿时间：2005-08-15 修订日期：2005-08-28 |
| DOI： |
| 中文关键词: 颅眶沟通性肿瘤 磁共振成像 |
| 英文关键词:Craniorbital tumors Magnetic resonance imaging |
| 基金项目: |
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| 中文摘要: |
| 目的 探讨颅眶沟通性肿瘤的MRI表现特征与诊断依据。方法 经手术病理证实的颅眶沟通性肿瘤18例,行MRI横轴位、矢状位、冠状位与增强扫描。结果 脑膜瘤10例,T1WI等信号或略低信号,T2WI等信号或略低信号,肿块明显均匀强化,常合并蝶骨增生。视神经鞘脑膜瘤3例,视神经不规则管状或梭形增粗,T1WI等信号,T2WI为等或略低信号,增强后呈"双轨征"。视神经胶质瘤1例,眶内见纺锤形肿块,T1WI等信号,T2WI高信号,肿块明显强化呈"哑铃征"。炎性假瘤3例,T1WI |
| 英文摘要: |
| Objective To investigate the MRI characteristics and diagnostic value of craniorbital tumors. Methods Eighteen cases of craniorbital tumors were confirmed by pathology, which were scanned with transverse, sagittal, coronal and contrast-enhanced scanning. Results There were ten cases of meningioma, which were isointense or slightly hypointense on T1-weighted images (T1WI), isointense and slightly hypointense on T2-weighted images (T2WI), with marked uniform enhancement. Hyperostotic changes of the sphenoid bone were also found frequently. There were 3 cases of meningioma of optic nerve sheath, optic nerves were fusiformly thickened or tubularly enlarged, which were isointense on T1WI, isointense and slightly hypointense on T2WI. The "tram-track" sign was clearly demonstrated after contrast-enhanced scanning. There was one case of optic gliomas, the spindle-shaped mass was shown in orbit, which was isointense on T1WI, hyperintense on T2WI; the "dumb-bell" sign was clearly demonstrated after enhancement. There were 3 cases of orbital inflammatory pseudotumor, which were hypointense on T1WI, hypointense on T2WI, with marked enhancement; the muscle and eyelid were often greatly enhanced. There was one case of xanthogranuloma, which was isointense on T1WI, hypointense on T2WI; hypertrophy of the muscle of eye was shown evidently; isointensity signal on T1WI and hypointensity signal on T2WI were found symmetrically in the bilateral tentorium of cerebellum, with strong uniform enhancement. Conclusion MRI is valuable in the diagnosis of craniorbital tumors, which will improve diagnostic level and provide a scientific basis for clinical treatment. |
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