You know, I hate to spoil the party here, since from an electronics point of view this is a very valid and interesting topic.
But it's one that very badly needs a reality check. Which is to say that this entire enterprise is basically junk science, bunkum, folklore and wishful thinking.
I'm not at all insensitive to your situation, and naturally you want to do all you can to help your father. But this is the worst way to do it.
I know something about this, as my own father died of cancer (carcinoma) after a long battle. Having been a total skeptic all his life, towards the end he turned to all kinds of marginal remedies, out of desperation: laetrile (remember that?), acupuncture, other voodoo that was then popular.
None of it helped, and he died a miserable death. Had this happened today, he would have survived a lot longer and been less miserable, because say what you will about corporate mainstream medicine, there have been incredible advances made in the last several decades. (I just had a friend die of glioma, the same brain cancer Ted Kennnedy died of, and he survived a lot longer than Kennedy because of improved treatment--and this was just a couple years afterwards.) I don't like modern medicine any better than you seem to do, but I don't see anything like their results coming from the current crop of witch doctors and New Age opportunists.
Sorry to be so blunt, but if you really want to help him, you won't get sidetracked into such quackery. Someone needs to say this ... I won't say anything more about it here.