[sweeps]

My $.02. First, I'd advise not to chase career paths just because they're hot at the time. Does radiology technology really interest you, or are you only considering this change for the money? (I'm surprised that you're having problems finding a decent-paying, entry-level computer job right now. I'm seeing a lot more appear on Monster and Hotjobs. But I suppose this depends on what area of the country you live.)

In my experience you have to give a new job/career at least 6-12 months before you can really know how you feel about it. Are there any opportunities at the hospital you're volunteering at to use your computer skills? You could give the computer career a fair shot, while also getting your foot in the door in the healthcare industry -- perhaps making some connections there so you could transition to radiology technology or similar job if necessary.