<prompt> Retinoblastoma best evaluated by -UltrasonographyCT SCANCT SCAN MRIMRI  <response>: Ans. is c i.e., CT SCAN MRI Imaging in Retinoblastomao MRI - best for challenging retinoblastoma patient evaluation; also used to rule out optic nerve and intracranial invovlemento CT SCAN - detects calcification, can also be used for initial evaluation.o MRI CT SCAN - best for trilateral, tetralateral, recurrent retinoblastoma, metastases from retinoblastoma 