Is it safe to have an mri, x-ray, or cat scan after having the covid vaccine? will any of these types of imaging affect the efficacy of the vaccine?

Yes, above tests are not expected to interfere with your vaccine and they may provide needed information about your current condition.

There is no know interaction between the diagnostic scanners you mentioned and Covid-19 and variants. Imaging facilities are required to do extensive cleaning between patients to prevent transmission of viruses. Feel free to inquire of the center their procedures.

Likely, the safest places these days are within imaging facilities, and besides the best COVID-19 vaccines provide 94% protection. The mentioned techniques in NO way affect our immune system, so, stop worrying. But if this is a focus of ongoing concern, find a trusted counselor and deal with your fears.

The imaging studies you mentioned will not interfere with the efficacy of the vaccine. For healthy diet: http://www.choosemyplate.gov/., exercise 30 minutes/day, drink enough water daily so your urine is mostly colorless, have safe sex, no tobacco alcohol weed or street drugs. Get HPV vaccine. Wish you good health!

Imaging facilities have a lot of patient traffic. Frankly, I'd be hesitant to go into one of those places WITHOUT having received the CoViD vaccine.