[gondramB]

Well radio waves are a form of radiation. By sending multiple beams that cross at a cancer it is possible to give the cancer much more radiation than the surrounding healthy tissue.

So this isn’t unthinkable except that precision would be better without the pie pans and with some better controls.

He could also give himself some new cancer.

[Coyoteman]

Well radio waves are a form of radiation. By sending multiple beams that cross at a cancer it is possible to give the cancer much more radiation than the surrounding healthy tissue.

So this isn’t unthinkable except that precision would be better without the pie pans and with some better controls.

He could also give himself some new cancer.

I think they are generating heat in the metal (gold), more like a microwave oven does than what is normally thought of as radiation.

Because the gold attaches to the cancer cells, that heat is directly applied, causing selective cell death.

I would suspect that the frequency involved is far from what is normally thought of as "radiation."

[Carbonado]

Yes radio waves are a form of radiation, but radio waves are not ionizing radiation, except where the intensity of those radio waves is extreme. EM Radiation in that frequency range is dissipated as heat, and any radio waves strong enough to rearrange your DNA (cause mutations/cancer)is also more than strong enough to destroy that same tissue.