NPL's unique range of hydrophones and beam-plotting tanks provide acoustic output measurements of medical ultrasound equipment in the frequency range 500 kHz to 50 MHz, with a positional resolution of 2.5 micrometres.

Facilities include:

• Bespoke beam-plotting tank with 9 computer-controlled axes
• Precision Acoustics Ltd beam-plotting tank with 3 computer-controlled axes
• Multi-element hydrophone-based Ultrasound Beam Calibrator

These facilities cover measurements of the acoustic output of ultrasonic devices against the following standards: IEC 61157, IEC 60601-2-5, IEC 61689 and IEC 60601-2-37 ISO EN45502-1 Clause 22.1 AIUM/NEMA UD-2 AIUM/NEMA UD-3 FDA 510(k), FDA 1050.10

Typical work includes:

• Acoustic output testing of diagnostic and therapeutic devices for FDA approval and CE marking
• CW and pulsed ultrasound check source characterisation
• Ultrasound exposure tests

Experimental investigations can also be carried out to examine the field distribution of pre-market devices, from medical and industrial applications, providing the user with valuable information on beam patterns produced by prototype transducers.

See also:

• Ultrasound power output and Radiation Force Balance calibration

Contact

Customer Service tel: +44 20 8943 8631
E-mail: acoustics_enquiries@npl.co.uk