@boogz, you're in good hands at Mayo Clinic. I'm tagging a few other members who have experience with brain metastasis and whole brain radiation like @kerynbookeraustralianoosaooooooo @lynnn @eku and others.

When might you begin radiation treatments? How many?

@boogz I absolutely agree with Colleen. If there is a center that could be described as “center of excellence” it is Mayo. The last time I was in Rochester they were building the brand new state of the art radiation center.
I found at Mayo, that our doctors gave as much information on our choices and the recommended treatments as we asked for.
Has your doctor discussed the probable outcomes of doing or not doing this radiation or a different plan?

@boogz I forgot to mention that they put my husband on a pill called memantine as a preventative to help with possible memory issues.