There are sub-Saharan countries where the whole country has less medical equipment than the equipment lying idle in the corridors of hospitals such as Massachusetts General.
I see the One Laptop Per Child Children's Machine XO platform as a powerful platform that can enable telemedicine in underdeveloped areas by bringing medical diagnostics, and treatment options which may, otherwise, be inaccessible.
The OLPC XO platform is more powerful, by orders, of magnitude than computational engines used in medical devices such as patient and fetal monitors of the 80's. The video capabilities as well as mesh networking enables, with appropriate peripherals and front ends, the capacity to diagnose heart disease (EKG, Blood Pressure, Blood Oxygen) as well as monitoring of mothers during pregnancy. The video camera may be used to look different aspects of a person in order to assess gross determinations about the physical condition.
The ability to power the XO computer by mechanical means is also a powerful feature in addition to access to physicians and hospital via the mesh net. Internet Kiosks using PC platforms are being tested in countries such as India for telemedicine and eye care. Such kiosks may be located in Health Care Franchises such as in Kenya, as illustrated in "NOW" by PBS.
I realize that the primary application of the laptop is for educating children. However, this platform is still cost effective using the "buy two keep one" paradigm as described by Professor Nicholas Negroponte.