The thing looks pretty fragile -- one of the reasons why they use piezo based systems is they are pretty robust.. I guess I am not clear how this system equates to getting a $100 ultrasound machine.. I'm gonna go out on a limb here and say this system probably is not going to replace normal ultrasound systems for some time.. but could be used to wrap one of these membranes around say your heart and have something like an implantable ultrasound heart monitor..