<unk>  is a modality of medical ultrasonography that utilizes small and light devices, compared to the console-style ultrasound machines that preceded them. In most cases these mobile ultrasound systems could be carried by hand and in some cases even operated for a time on battery power alone. The first<unk>  machines arrived in the early 1980s but battery powered systems that could be easily carried did not arrive until the late 1990s.
Portable ultrasound
Pre-hospital ultrasound
3D ultrasound
Shoe-fitting fluoroscope
Ultrasonic transducer
Invasive test
Home ultrasound
Intravascular ultrasound