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Journal Articles Optics Express Year : 2016

Ultrafast acousto-optic imaging with ultrasonic plane waves

Abstract

Due to multiple light scattering inside biological tissues, deep non-invasive optical medical imaging is very challenging. Acousto-optic imaging is a technique coupling ultrasound and light that allows recovering optical contrast at depths of few centimeters with a millimeter resolution. Recent advances in acousto-optic imaging are using short focused ultra-sound pulses often averaged over several hundred or thousand pulses. As the pulsing rate of commercial probes is limited to about few ultrasound cycles every 100 µs, acquiring an acousto-optic image usually takes several tens of seconds due to the high number of acoustic pulses excitation. We propose here a new acousto-optic imaging technique based on the use of ultrasound plane waves instead of focused ones that allows increasing drastically the imaging rate.
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Dates and versions

hal-01297520 , version 1 (04-04-2016)

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Jean-Baptiste Laudereau, Alexander A Grabar, Mickaël Tanter, Jean-Luc Gennisson, François Ramaz. Ultrafast acousto-optic imaging with ultrasonic plane waves. Optics Express, 2016, 24 (4), pp.3774-3789. ⟨10.1364/OE.24.003774⟩. ⟨hal-01297520⟩
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