CT、MRI与DSA在脑内型海绵状血管瘤诊断中的价值

The Diagnosis Value of CT MRI and DSA in Intraaxial Cavernous Hemangioma

目的探讨CT、MRI与DSA检查在脑内型海绵状血管瘤诊断中的价值。资料与方法回顾性分析经手术病理证实的22例脑内型海绵状血管瘤患者资料,CT平扫22例,其中增强扫描17例。MRI检查22例,其中增强扫描13例。DSA检查5例。结果CT表现为高密度,略高密度,等密度。MRI表现为T1WI呈等或略低信号、T2WI呈高信号;T1WI与T2WI均呈高信号,病灶周围可见低信号环;T1WI与T2WI均呈低信号。病灶无占位效应或占位效应轻微,病灶多为不强化及轻微强化。DSA检查无肿瘤染色。结论脑内型海绵状血管瘤MRI表现典型,比CT表现更具特异性,与CT检查结合是诊断脑内型海绵状血管瘤的有效方法,参考DSA表现有利于脑内型海绵状血管瘤的诊断。

Objective To discuss the value of CT,MRI and DSA in the diagnosis of intracranial cavernous hemangioma. Materials and Methods Twenty-two patients with intracranial cavernous hemangioma confirmed by operation were retrospectively analyzed. All the patients performed CT and MR plain scan. 17 and 13 cases of them performed enhanced CT and enhanced MRI scan as well. 5 cases were checked with DSA. Results Intracranial cavernous hemangioma showed hyperdensity,slight hyperdensity or isodensity on CT images. Some lesions appeared isointensity or slight hypointensity on T1WI and hyperintensity on T2WI. Some lesions appeared hyperintensity on both T1WI and T2WI with hypointensity circle surrounded. The other cases appeared hypointensity on T1WI and T2WI. The lesions had no mass effect and enhancement. There was no tumor stain on DSA images. Conclusion The MRI is superior to CT in diagnosing intracranial cavernous hemangioma. It is an effective method to analyze the intracranial cavernous hemangioma combined with CT and DSA.