Hi Sheri,
Thank you for sharing your experiences and some of your worries here. A couple of thoughts that came to mind, which you may already be familiar with but felt worth mentioning. EMDR therapy can be a helpful method for reprocessing past traumas and integrating new beliefs into our brains and bodies. I also have had a positive experience with using EFT tapping and have read several accounts of it supporting physical pain/barriers weighing on the body.
I also did a Google search about how to relax during an MRI, and there are lots of suggestions out there. I wonder if any resonate with you and could be helpful to practice in advance of getting an MRI. Here are two of the links I pulled first:
https://www.nuffieldhealth.com...during-your-mri-scan
https://blog.radiology.virgini...-mri-claustrophobia/
I hope you can find healing and wellness in your journey.