摘要
目的:探讨CT及MRI在诊断三叉神经瘤中的临床价值。方法:回顾性分析16例经手术病理证实的三叉神经瘤的CT及MRI表现,16例均行CT扫描,其中7例同时行MRI扫描。结果:16例中有9例表现为特征性哑铃形,7例表现为类圆形,CT扫描肿瘤呈混杂密度、均匀密度或等密度,均无钙化及水肿。MRI表现肿瘤T1加权像呈低信号,T2加权像呈高信号,增强扫描呈不均匀强化。结论:CT、MRI对三叉神经瘤的定位、定性及岩骨、颅底骨的异常改变具有重要的诊断价值,是诊断三叉神经瘤的有效检查方法。在对骨结构的观察方面CT优于MRI。
Objective:To evaluate the value of CT and MRI in the diagnosis of trigeminoma.Methods:CT and MRI findings of 16cases with trigeminoma verified by operation and pathology were analyzed retrospectively.CT scanning was per-formed in16cases in whom7cases also underwent MRI scanning.Results:Nine of the16trigeminoma appeared as charac-teristic dumb -bell lesions.Seven showed round mass like lesions.Tumors demonstrated mixed homogeneous or homogeneous in density without calcification or adjacent edema on plain CT scans and showed hypointense signal on T 1 -weighted image,hyper-intense signal on T 2 -weighted image,inhomogeneous enhancement in contrast scans.Conclusion:CT and MRI is an effective method and possesses important value for diagnosing trigeminoma.CT is superior to MRI in detection of the skeletal involve-ment.
出处
《中国临床医学影像杂志》
CAS
2003年第2期80-82,共3页
Journal of China Clinic Medical Imaging
