More seriously, I do understand about the radiation. In fact, an Xray would be blank if part (but not all) of the radiation were NOT absorbed by the tissue it passes through, which means that electromagnetic energy is deposited in those tissues.
Of course, EM energy exists somewhere within a spectrum extending from very low frequencies through the radio frequencies, heat, light, Xray, and gamma radiation. We can detect and characterize energy within virtually all of this range, we know that some of it has physiologic effects, that some EM signals are generated and used by the body, and that many of these can be detected externally.
But the signals we have found are pretty crude, and nobody has figured out, for instance, how they could be decoded to reveal my name, rank, and relationship to God (or to my wife, for that matter.)