We've talked about this before, as have many others, all apparently to no end. Building these machines helps no one. It improves the hospitals bottom line by selling a more expensive service that may sound good but time and again has proven to be no better than existing, cheaper technologies.
Proton Beam Therapy Heats Up Hospital Arms Race - Kaiser Health News: ""We don’t have evidence that there’s a need for them in terms of medical care. They’re simply done to generate profits."
The higher costs of proton services ultimately trickle down to taxpayers, employers and consumers in the form of higher health insurance premiums. "