It's probably worth mentioning that relatively low-cost and mobile ultrasound machines exist. One company just recently received FDA approval for a wireless ultrasound machine. Target price seems to be ~7k to ~10k
I think there are low end Chinese transducers that plug into a laptop that are $1500.
That said the idea that an ultrasound machine is expensive is just laughable from a commercial/industrial cost perspective. Ok a mid range ultrasound machine costs $50,000.
$50,000!!!! Oh the agony!!! Oh please, a taxi costs $30,000 and I can get a taxi ride downtown for $8.
What's expensive is US medical pricing. Where they charge $700 for an ultrasound. When the machine itself has a capital cost of about $600/mo.
TeleMed [1] is slightly higher-end and has CE mark (IIRC in the $1-2k range for the uncleared/demo version). UltraSonix [2] used to be relatively reasonable option (IIRC under $10k), but they were bought by BK and prices may have increased.
See news here: http://www.mobihealthnews.com/content/clarius-mobile-health-...
See company website here: http://www.clarius.me/