MRI对颅内脑膜瘤的诊断价值研究

Study of the Value of MRI in the Diagnosis of Intracranial Meningioma

目的探讨MRI对颅内脑膜瘤的临床诊断价值。方法回顾性分析我院2014年1月-2015年12月期间接收并经手术病理确诊的96例脑膜瘤患者的MRI检查资料,并对脑膜瘤患者的病变大小、位置、形态等MRI影像特征、检出率及其病理特点进行综合分析。结果 96例脑膜瘤患者均为单发肿瘤,其中肿瘤位于顶部大脑凸面、前颅底、中颅凹底、后颅底、大脑镰旁的患者分别有39例、23例、18例、10例、6例;以手术病理确诊结果为标准,MRI对本组脑膜瘤肿瘤的检出率为91.7%;肿瘤的形态主要为圆形或椭圆形、半月形,直径在3-5cm之间,大小在1.2cm×1.0cm×1.3cm-6.2cm×4.6cm×6.1cm之间;在T1WI呈等信号58例,呈稍低信号29例,呈混杂不均匀信号9例;在T2WI呈稍高信号46例,呈等信号21例,呈低信号21例,呈混杂不均匀信号8例;增强扫面后,明显强化的有88例,强化不均匀有8例;67例可见明显的脑膜尾,38例肿瘤周围显示有水肿带,63例肿瘤在T1WI上可见环状低信号,27例局部颅盖骨增厚。结论 MRI在脑膜瘤的诊断过程中,不仅能够定位诊断出肿瘤的发育部位、大小、形态,还能通过综合分析脑膜瘤的MRI影像表现与病理特点进行定性诊断,具有重要的临床应用价值,值得进一步推广和应用。

Objective To investigate the clinical value of MRI in the diagnosis of intracranial meningioma. Methods Retrospective analysis of MRI data of 96 patients with meningioma confirmed by surgery and pathology in our hospital from January 2014 to December 2015. And comprehensive analysis of the lesion size, location, morphology and other MRI imaging features, detection rate and pathological characteristics of patients with meningioma. Results 96 cases of patients with meningioma were solitary tumors. The tumor located in the top convexity, anterior skull base, middle cranial fossa, after skull base, falx patients respectively was 39 cases, 23 cases, 18 cases, 10 cases, 6 cases. The detection rate of MRI in this group was 91.7%, which was confirmed by surgery and pathology. Tumor shape is round or oval, half moon shape, diameter between 3-5cm, size between 1.2cm×1.0 cm×1.3 cm to 6.2 cm×4.6 cm×6.1cm. T1 WI was in 58 cases, showed slightly low signal in 29 cases, 9 cases showed mixed uneven signal; T2 WI was slightly high signal in 46 cases, 21 cases showed signal, 21 cases showed low signal, 8 cases showed mixed signal. After enhanced scanning, 88 cases were obviously enhanced, and 8 cases were inhomogeneous enhancement. Around 38 cases of tumors showed edema, 63 cases of tumor in T1 WI showed hypointense, 27 cases of partial calvarial thickening. Conclusion MRI in the diagnosis of meningioma, not only to locate the location and size of the tumor diagnosis, size, shape, but also through the comprehensive analysis of the MRI imaging manifestations and pathological features of the qualitative diagnosis, has important clinical application value. It is worthy of further promotion and application.