The image quality of a Terason Ultrasound surpasses any other system in its class because of its unique 128 physical channel beamformers.  The Terason 3000 and Echo have 256 channels, 128 transmit/128 receive.

To put that in perspective even the newest and most expensive high end systems costing a third of a million dollars only have 256 transmit/256 receive channels

Terason 2000 more info ..

Terason 3000 more info ..