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Reducing uncertainties for spatial averaging at high frequencies

Sinden, D; Rajagopal, S; Chaggares, N C; Pang, G; Ivanytskyy, O (2017) Reducing uncertainties for spatial averaging at high frequencies. In: 2017 IEEE International Ultrasonics Symposium (IUS), 6-9 September 2017, Washington DC, USA.

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Abstract

Accurate characterization of ultrasound fields generated by diagnostic and therapeutic transducers is critical for patient safety. At high frequencies, spatial variations in the pressure over the surface of the measurement device will produce a different averaged value from that at the intended location. Using a small hydrophone as an idealised point device, this paper seeks to ascertain the spatial-averaging error for a finite-area reference device along the beam axis.

Item Type: Conference or Workshop Item (Paper)
Keywords: hydrophones, high-frequency calibrations, spatial-averaging, uncertainties
Subjects: Acoustics > Ultrasound
Divisions: Chemical, Medical & Environmental Science
Identification number/DOI: 10.1109/ULTSYM.2017.8091600
Last Modified: 03 May 2018 13:17
URI: http://eprintspublications.npl.co.uk/id/eprint/7813

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