Welcome Oliver,
Take one day at a time, easier said than done, and nothing I ever did. It's not cancer until proven it is, and a scan can't do that, only a biopsy will. The scan may dictate the next route. Just to answer your question, radiation can be done more than once, these days, under certain circumstances, precautions. I had radiation 3x, to the same area, and going for my 4th next month.
Good luck.
