I don't know much about the operation of X-ray machines or what freqs they use...
I'm have just a little experience with the wonderful world of RF. Once upon a time, I was part of an engineering group that wrote the installation instructions for a product we sold, and in hindsight, I did not have a clue!!! We did things that, while not dangerous, did not do what we wanted them to do. So I take the manufacturer's instructions with a grain of salt.
I understand that you have to follow the instructions that came with the equipment. I'm saying as one who has been on the writing end of those instructions, what they want and what they wrote, are not necessarily the same.