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5 March 2021 Increasing SNR in acousto-optic imaging using coded-transmission ultrasound
Ahiad Refael Levi, Sagi Monin, Evgeny Hahamovich, Aner Lev, Bruno G. Sfez, Amir Rosenthal
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Proceedings Volume 11642, Photons Plus Ultrasound: Imaging and Sensing 2021; 116424Q (2021) https://doi.org/10.1117/12.2577740
Event: SPIE BiOS, 2021, Online Only
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Abstract
Acousto-optic imaging (AOI) enables the non-invasive imaging of light diffusion patterns inside biological tissues. To perform depth-resolved imaging without mechanical scanning, time-gated AOI is often used, in which ultrasound pulses, rather than continuous waves, are delivered into the tissue. However, to achieve a high axial resolution, few-cycle pulses are used, leading to a short measurement time and poor SNR. Here, we experimentally demonstrate a new approach to AOI in which coded ultrasound pulses are used to improve the SNR without sacrificing the axial resolution.
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Ahiad Refael Levi, Sagi Monin, Evgeny Hahamovich, Aner Lev, Bruno G. Sfez, and Amir Rosenthal "Increasing SNR in acousto-optic imaging using coded-transmission ultrasound", Proc. SPIE 11642, Photons Plus Ultrasound: Imaging and Sensing 2021, 116424Q (5 March 2021); https://doi.org/10.1117/12.2577740
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KEYWORDS
Signal to noise ratio
Ultrasonography
Acousto-optics
Modulation
Tissues
Light wave propagation
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