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.