From a white paper by Ben Philipson, the inventor of the Curatron Systems.
Only Pulsed electromagnetic fields (PEMF) influence cell behavior by inducing electrical changes around and within the cell
The magnetic field strength of a magnet is related to its size and composition, which determines the depth of penetration of the magnetic fields. There are many therapeutic systems on the market which use permanent magnets made of different materials. These manufacturers often claim field strengths of 4,000 gauss and higher. These values are however not relevant at all, since the measured field strengths of these magnets range from 310 gauss to 2,200 gauss at the surface, at 1-inch distance around 10 Gauss at 3-inch distance absolutely nothing! 
Magnetotron (Circa 1974)
Sometime ago I was reading a letter from a satisfied Curatron customer who had upgraded from an older technology PEMF machine called the Magnetotron. I was amazed to find out that this device may still be in production. There are and have been several machines over the years that require the user to sit inside a coil rather than on a simple flat pad or mattress. These arcane devices are difficult to use and tend to generate weak magnic fields.
The 14th World Society of Pain Clinician’s Congress was held in Beijing recently and Dr. Ashfakh Ahmed* displayed the results of his study that was done between March of 2006 through March of 2010.
His study objectives were:
- To prove that knee replacement surgery is not the only option but only the last option
I received an interesting phone call yesterday from a woman suffering from neurosarcoidosis and rheumatoid arthritis. She had been in India recently and had received relief from her pain and some symptoms at a clinic where she was treated with a machine made in Japan called an Alpha machine.
With a lot of Google and Yahoo searching I could find nothing about it. If anyone does know what it is, you can email me at firstname.lastname@example.org.