I want to be an MRI tech? College questions! Please help!!!!?

hi there! i was accepted into an art institute for audio production for August, and now literally 3 weeks before classes started i chickened out. I want to be a MRI technician now, but i never took any classes in high school like chemistry, anatomy, calculus, none of that, will i still be able to be an MRI tech? And what are the steps i need to take to become a MRI tech. I just got accepted into a State University yesterday but on the letter it said that if i want to be accepted into the Radiologic Sciences program i need to do a separate application process is this normal for state schools and will i be okay without those classes or am i going to live under a bridge forever?!
I had a 4.0 in high school.