I have had one every six months since being diagnosed. Of course they noticed a glioma, and have been watching that as well. I have one coming up in a couple of weeks, and if all remains the same, or better, I will not schedule another for at least a year. I dont like all that GAD dye being pumped into me either, but when they find things like gliomas, and lesions and so forth, I dont give a cracker how much it costs, I want to know what is happening in my head. I guess I am one of those spoiled by having great insurance, and good MDs who are happy to get the answers we seek. The MRI itself may not be helpful in controlling the disease, but it is helpful in letting us know if our meds are working or if we have active areas lit up. I am happier for the knowing, and would have been incredibly stressed playing the guessing game.