I work around hospitals some and every once in a while I get the odd feeling after watching a specialist scratch his head over a fuzzy black and white "slice" made by in imager with a magnet the size of a garbage truck that its all still so primitive.
Medicine has a long way yet to go.
My academic background is in history, with a focus on the history of science and medicine, and it's an excellent foundation for optimism.
Hell, lets just go all sci-fi and get right to the part where there's an iphone app for waving over a person and seeing their insides in full color in real time...
I've heard it suggested that Japan got "scan-happy" (patients want a scan, kind of like how US patients want antibiotics for their virus), so they built cheapo MRIs to give them what they want.