It is a big problem. It's unrealistic to expect patients to have access to a DVD ROM drive, let alone the know-how to use any of the software mentioned
Learning to accurately read more than "clean break through an arm" typically takes about 15 years (6 years of medical school, 6 years of radiology school, and fresh graduate radiologists are neither quick nor particularly accurate compared to those who have been working for 3 years).
Software is the least of your problems.