I think the main thing that the healing is supposed to deal with is the critical areas of the body that are actively causing the diseases. Everyone has their own problems with their energy body, mostly caused by neglect. It's my understanding that this eventually builds to a critical mass, and then manifests as a disease with symptoms. The healing is not designed to overhaul the patient's energy system; it's designed as a quick fix, sort of "first aid" to deal with the symptoms and a bit of the root of the problem. Enough to drive the disease back to dormancy, at least. That's the way it seems to me.
But it's important to remember that energy problems are not always the culprits of discomfort. Most often it's a two-sided problem, energy and body. One can hardly say that a gash that was torn in someone's leg was caused by an energy blockage, and not the piece of twisted metal they scraped! The same goes, on a more mild level, for diseases. Energy certainly helps your immune system fight off virii / bacteria, but it doesn't magically whisk them out of your body. Neither does it replace lost blood. However, it does calm and soothe your body's energy lines, facilitating natural repair systems in a grand way.
I think that the technique Mr. Bruce presents is effective, but cannot replace the person doing their own personal energy work, no more than they can form a telekinetic shield around a leg to prevent twisted metal from carving into it. Also, sending energy to the afflicted area has more intention to fix the symptoms of the problem, rather than deal with the root problem itself. Such a problem may be beyond the scope of outside help, though you may be able to comfort and heal the symptoms.
In answer to your question, a system that might fit your bill is Reiki. From what I've read, it floods the entire body with energy at once, and accumulates in problem places. You can find resources by googling the word "reiki", and if you need an attunement, I'd head on over towww.xehupatl.com