20 March 2014 Real-time clutter reduction in epi-optoacoustic imaging of human volunteers
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Abstract
Optoacoustic (OA) imaging in combination with diagnostic pulse-echo ultrasound is most flexibly implemented with irradiation optics and acoustic probe integrated in epi-style in a combined probe. Unfortunately, clinical epi-OA imaging depth is typically limited to one centimetre owing to clutter signals that originates from the site of tissue irradiation. In past years we have developed displacement-compensated averaging (DCA) for clutter reduction, based on the clutter decorrelation that occurs when palpating the tissue using the ultrasound probe. This method has now been implemented on a research ultrasound system for real time scanning with freehand guidance of the linear probe. Volunteer results confirm that clutter is significant in clinical OA imaging, and that DCA significantly improves image contrast as compared to conventional averaging. Clutter reduction is therefore a basic requirement for a successful combination of OA imaging with pulse-echo ultrasound.
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Michael Jaeger, Michael Jaeger, Kujtim Gashi, Kujtim Gashi, Sara Peeters, Sara Peeters, Gerrit Held, Gerrit Held, Stefan Preisser, Stefan Preisser, Martin Frenz, Martin Frenz, } "Real-time clutter reduction in epi-optoacoustic imaging of human volunteers", Proc. SPIE 9040, Medical Imaging 2014: Ultrasonic Imaging and Tomography, 90400N (20 March 2014); doi: 10.1117/12.2043004; https://doi.org/10.1117/12.2043004
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