Measurement and characterisation of the acoustic output of medical ultrasonic equipment. Part 1.
D000162:Acoustics; D002151:Calorimetry; D004560:Electricity; D006801:Humans; D008027:Light; D013696:Temperature; D014159:Transducers; D014464:Ultrasonic Therapy / Q000295:instrumentation*; D014463:Ultrasonography / Q000295:instrumentation*