You have to remember that in Thailand most hospitals are "for profit" and are encouraged to squeeze as much money out of their patients as possible. A friend of mine says that an MRI is the standard diagnostic tool in hospitals such as BNH. Attend outpatients for an ingrown toenail and they'll recommend an MRI (only a slight exaggeration). An MRI result is not a diagnosis; that's up to the doctor who interprets the results. As well, Thailand is at least 5 years behind the times when it comes to modern medical advances. I'd definitely be seeking a second opinion, even from Canada - a country that has the sort of socialised medical system the Americans are always being warned against.