I need an MRI

I was diagnosed with Chiari Malformation and Syringomyelia in 2016. A month after diagnosis, I had to have surgery and it completely changed my life. I had to stop working which meant I no longer had the insurance to receive the medical coverage that is necessary to maintain my health. I've been able to maintain with minimal Healthcare, but it is now necessary for me to have an MRI. MRIs are expensive and it would be difficult for me to get the funds on my own. Any help with this is greatly appreciated.