title: A simple device for checking the acoustic beam of ultrasonic therapy equipment.
abstract: Ultrasound of time average acoustic intensities between 0.5 and 3 W cm-2 is widely used in physiotherapy. A simple device for semiquantitative checking of output power and beam shape has been designed. The beam tester consists of an absorbing plate and a sheath liquid crystal thermometer for temperature distribution display. The ultrasonic beam is fed to the absorber through a simple water tank.
mesh_terms: D014464:Ultrasonic Therapy / Q000295:instrumentation* / Q000592:standards