This headline is quite misleading. The article is about a new, less invasive way of diagnosing cancer, the prototype of which happens to have been implemented as a smartphone peripheral.
The article doesn't mention iPhone or Android, except for the picture. In any case, I always wonder in general how these types of apps can be distributed for iPhones since it wouldn't qualify for the app store or for the enterprise developer program.
There's some great innovation over the last decade in diagnostic and treatment technology. It makes me wonder why health insurance premiums continue to rise at many times the rate of inflation.