CT、MRI在颅内海绵状血管瘤诊断中的价值

CT and MRI in diagnostic of intracranial cavernous hemangioma

目的：探讨CT、MRI检查在颅内海绵状血管瘤诊断中的价值。方法：20例颅内海绵状血管瘤患者,CT检查15例,平扫14例,平扫加增强扫描12例。20例均行MRI检查。结果：本组20例检出21个病灶,其中1例有2个病灶,其余为单发;脑内14个,直径1.0-5.1cm,脑外7个,直径0.5-2.2cm;类圆形14个,不规则结节状5个,分叶状2个;边界清晰19个,不清晰2个。CT检出8个病灶,平扫多数病灶显示为高密度,少有囊变,病灶无占位效应或占位效应轻微,病灶可发生钙化且呈斑点状,并位于病灶中心部,病灶强化多为不均匀性增强;MRI检出21个病灶,T1WI呈略低或低等混杂信号,T2WI呈高信号或混杂信号,病灶周围可见由出血所致含铁血黄素沉着而形成的环状低信号包绕。结论：MRI对病灶的显示较CT优越,CT和MRI结合检查是诊断颅内海绵状血管瘤的有效方法。

Objective. To investigate the CT and MRI in the diagnosis of intracranial cavernous hemangio ma. Methods： Twenty cases of intracranial cavernous hemangioma patients, 15 cases underwent CT scan, 14 cases underwent plain scan, plain and contrast enhanced scan in 12 cases. 20 cases underwent MRI ex amination. Results： The 20 cases detected out 21 lesions, one case have two lesions, and the rest for a solitary; 14 in brain, the diameter is 1.0-5.1 cm, 7 outside brain and the diameter is 0.5-2.2 cm. Round 14, irregular nodular 5, lobulated 2; Clear boundary 19;2 is not clear; CT detected out eight lesions, the majority of plain lesions showed high-density, Rare cystic degeneration, Lesions without mass effect or mass effect minor. Calcified lesions may occur which was spotted and was at the center of lesions, most of the enhancement are uneven enhancements; MRI detected 21 lesions, TlWI showed slightly low or mixed signal, T2WI showed high signal or mixed signal. Visibility around the lesions have annular enveloping the low signal caused by the bleeding with Hemosiderosis. Conclusion.. The MRI is better in intracranial cav- ernous hemangioma diagnosis. The combination of CT and MRI can be the effective way to diagnose intracranial cavernous hemangioma.