I think you should schedule an appointment with him. If you have no appointment scheduled, the ball is in your court to schedule one if you need it. During your appointment you can go over the results of your MRI, clear up any misunderstanding there may have been over your email, and talk about your current aphasia symptoms and the next steps (e.g. sleep study). You don't know that he is pissed off at you, just that he hasn't answered your email. I'm not sure he would get so angry just because "you wasted the hospital's time and money" and so refuse to answer your email. Maybe he has been busy or he likes to keep discussions with patients in-person rather than by email. I don't think it is a good idea to keep putting your personal fantasies in your emails. I think it better to share those in person so you can explain better. It's easy to misinterpret the intent in emails when you can't see facial expressions, ask for clarification, etc.