Originally posted by humy
interesting that near infrared can be used to indirectly kill cancer this way.
But how is this for a similar idea; use microwaves that somehow activate a drug. Not sure how you could design a drug to absorb microwaves and be chemically activated by microwaves but, if that can be mad ...[text shortened]... stay inactive and therefore none toxic where it is exposed to low levels or X-rays or no X-rays.
It would be interesting if a better wavelength could be used, I am thinking of Thz radiation. They already use them to scan for hidden weapons at airports so we know they penetrate all through the body.
The thing that would make Thz radiation good for cancer treatment is the fact the wavelength is MUCH smaller than microwaves and is still non-ionizing kind of radiation.
That means smaller antenna arrays, for instance, 300 mhz, 1 meter wavelength so an efficient antenna needs to be 1/2 meter or 50 cm wide to transmit. So 3000 mhz, 0.1 meter, antenna 5 cm wide.
But Thz, 300,000 mhz ish wavelength, 1 millimeter. Antenna 1/2 mm or 500 microns! And even shorter than that, 3 million Mhz, (3Thz) 100 micron wavelength, which is the low frequency end of IR.
See the difference here in localizing the radiation to a specific part of the body?
The trick then would be to have drugs that can activate under the influence of Thz radiation at a specific spot in the body but that method could kill much smaller tumors because of the smaller beam size.
IR and such has even shorter wavelengths but don't penetrate as well into flesh so higher powers would be needed and then of course you risk internal burns if it took too much power, which I have no idea what power levels they use so don't know if that would be a problem.