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The University of Southampton

Research project: Optical measurement of high amplitude medical ultrasound fields

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The measurement of ultrasonic fields in water relies on the use of devices known as hydrophones which have to be scanned through the field. For some fields, such as those generated in High Intensity Therapeutic Ultrasound (HITU) systems, the fields are of high enough amplitude to potentially damage the hydrophones. There is, therefore, a requirement to develop alternative systems for characterising these high amplitude fields.

This project aims to investigate the use of optical techniques for the characterising the fields of high amplitude medical ultrasound transducers, such as those used in ultrasound surgery. In particular the use of Laser Doppler Vibrometers (LDVs) to measure the acoustic pressure by means of a reflecting pellicle is being studied. Particular emphasis has been applied to the modelling of the influence of the acousto-optic effect on measurements using a pellicle and the numerical propagation of scan data to predict the entire acoustic field.

Related research groups

Acoustics Group
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