脑内海绵状血管瘤MRI表现及GRE T2~*序列成像的应用价值

目的探讨脑内海绵状血管瘤MRI表现及梯度回波(GRE)T2*序列成像的诊断价值。方法回顾性分析15例经病理证实的脑内海绵状血管瘤患者的MRI资料,分析海绵状血管在以上各序列上的信号特点,重点分析GRET2*序列信号特点及对病灶显示能力。结果 15例脑内海绵状血管瘤患者MRI共提示出18例病灶,其中12例病灶在T2WI、T1WI均呈网状、高低混杂信号;4例病灶在T2WI、T1WI均呈高信号;2例病灶T1WI、T2WI均呈等信号,16个病灶T2WI灶周具有"铁环"征,2例病例在GRET2*下发现合并其它隐匿性血管畸形。GRET2*显示的病灶范围包括瘤体及灶周含铁血黄素区域,敏感性高。结论 MRI是诊断脑内海绵状血管瘤的首选方法,常规序列与GRET2*序列相结合,能准确全面提供诊断信息,且GRET2*序列提高了隐匿性血管畸形检出率。

MRI features of cerebral cavernous hemangioma and the value of GRE T2

Objective To investigate the MR1 manifestations of cerebral cavernous hemangioma and gradient echo （GRE） T2＊ imaging diagnosis value, nechods MRI data was retrospectively analyzed in 15 cases with pathologically confirmed cerebral cavernous hemangioma; each sequence signal characteristics of the cavernous hemangioma was ana- lyzed; GRE T2＊ sequence signal and the characteristics of the lesion showed ability were focused. Results Of the 15 cases, MRI revealed 18 lesions, including 12 lesions showed reticular low-high signal in T2WI, T1WI; 4 lesions showed high signal in T2WI, T1WI;2 cases lesions were T1WI, T2WI equal signal; 16 lesions were with T2WI foci week＂hoop＂ syndrome;2 cases in GRE T2＊ found that combined with other occult vascular malformation. GRE T2＊ showed lesions in- cluding hemangioma and focal peripheral hemosiderin area with high sensitivity. Conclusions MRI is a preferred method for diagnosis of cerebral cavernous hemangioma. Combined conventional sequence and GRE T2＊ sequences can accurately provide diagnostic information, and GRE T2＊ sequences improves the detection rate of occult vascular malformation.