视网膜母细胞瘤的眼球MRI表现特点分析

目的 回顾性分析经临床病理证实的47例视网膜母细胞瘤的MRI表现,探讨MRI对其诊断价值.材料与方法 47例中男30例,女17例,男女比例约2:1.就诊年龄3个月至8岁,中位年龄2岁.观察各序列MR图像,统计肿瘤发生的部位、形态、信号及强化特点等.结果 病灶呈类圆形24眼35个、分叶状3眼3个、不规则形35眼;位于眼球后部34例42眼、赤道区10例13眼、眼球前部6例7眼;单个病灶44例53眼、2个病灶6例7眼、3个病灶2例2眼;47眼病灶可见钙化,病灶以不均匀低信号为主.钙化以外区域病变与脑灰质信号相比,T1WI以等信号为主38眼,以低信号为主21眼,等、高混杂信号2眼,1眼病灶平扫未能显示

MRI analysis of retinoblastoma in eyeball

Objective:To study MRI features and evaluate MRI values of retinoblastoma(RB) eyes which were identified by pathology.Materials and Methods:Total fourty-seven cases(male 30,female 12,ratio about 2:1) were included in the research.The ages ranged from 3 months to 8 years old,median was 2 years.All the MRI images were analyzed to evaluate the location,shape,signal and enhanced features of the masses.Results:Total 64 abnormal eyes were detected,bileteral eyes in 17 cases and unilateral eyes in 30 cases(the left and right eyes were equal).35 masses in 24 eyes were spherical or ovale,lobulated 3 eyes 3 masses and irregular shaped 35 masses in 35 eyes.Single masses were found in 53 eyes,two masses in 7 eyes and three masses in 2 eyes.Calcification were found in 47 eyes,the signal is heterogeneous.Slight enhancement were seen in 7 eyes,mild enhancement in 31 eyes and marked enhancement in 2 eyes.Conclusion:MRI can clearly show the location,shape,number,signal and enhanced feature of RB masses.Furthermore MRI images can show masses outside eyes and the matastasis to brain.