They say: «At the time of this writing several manufacturers offer hand -
held ultrasound machines slightly larger than a deck of cards, with technology and screens modelled after modern smartphones.»
Compared with expensive, bulky,
ultrasound machines of the past, the authors say that «Hand -
held ultrasound devices introduced an alternative concept of relatively inexpensive, easy - to - use
machines which could generate images interpretable by a wider spectrum of clinicians at the point of care.