Wilms G, Raat H, Dom R, Thywissen C, Demaerel P, Dralands G, Baert A L
Department of Radiology, University Hospitals K.U. Leuven, Belgium.
J Comput Assist Tomogr. 1995 Jul-Aug;19(4):548-51.
To describe the contrast enhancement pattern of orbital cavernous hemangioma on sequential Gd-enhanced MRI.
Six patients with an orbital mass lesion were examined with T1- and T2-weighted spin echo MRI. After intravenous administration of Gd-chelate at a dose of 0.1 mmol/kg, T1-weighted spin echo sequences were performed immediately after, after 15 to 30 min, and up to 1 h after the injection. In two patients a fat saturation prepulse was given before the Gd-enhanced study.
In all patients the lesions were isointense to muscle on the T1-weighted sequence and hyperintense to muscle on the T2-weighted sequences. After gadolinium, all lesions showed initial central patchy enhancement. Between 20 and 60 min after the injection the lesions showed total and homogeneous filling up.
Progressive and total homogeneous filling up of an orbital mass of Gd-enhanced MRI is a pathognomonic sign of cavernous hemangioma.
描述眼眶海绵状血管瘤在连续钆增强磁共振成像（MRI）上的对比增强模式。
对6例眼眶肿块病变患者进行了T1加权和T2加权自旋回波MRI检查。静脉注射剂量为0.1 mmol/kg的钆螯合物后，分别在注射后即刻、15至30分钟后以及注射后1小时内进行T1加权自旋回波序列检查。在2例患者中，在钆增强研究前给予脂肪饱和预脉冲。
在所有患者中，病变在T1加权序列上与肌肉等信号，在T2加权序列上比肌肉高信号。注射钆后，所有病变均显示最初的中央斑片状强化。注射后20至60分钟内，病变显示完全均匀填充。
钆增强MRI上眼眶肿块的渐进性完全均匀填充是海绵状血管瘤的特征性征象。
