Sparsity-based reconstruction for super-resolved limited-view photoacoustic computed tomography deep in a scattering medium

Optics Letters
David M EgolfRoger J Zemp

Abstract

Delay-and-sum beamforming (DSB) of photoacoustic data does not incorporate a priori spatial sparsity of the imaging target. By incorporating this information into beamforming for limited-view photoacoustic computed tomography, we experimentally obtained enhanced resolution images of wires at a depth of 8.5 mm in a tissue mimicking scattering medium. Using a 21 MHz transducer, we improved the resolution from the 200 to 250 μm achieved by DSB to 75 μm. The sparsity-based technique also generated a cleaner image with a background signal level of roughly -50  dB, much lower than the roughly -18  dB background signal level of DSB.

References

Mar 11, 2009·IEEE Transactions on Medical Imaging·Jean Provost, Frédéric Lesage
May 13, 2010·Journal of Biomedical Optics·Zijian GuoLihong V Wang
Jul 6, 2014·The Journal of the Acoustical Society of America·Angeliki XenakiKlaus Mosegaard
Nov 5, 2014·Journal of Biomedical Optics·Paul Kumar UpputuriManojit Pramanik
May 23, 2015·The Journal of the Acoustical Society of America·Guillaume DavidAndrew F Laine
Aug 8, 2015·Nature Communications·Donald B ConkeyRafael Piestun
Apr 19, 2016·Journal of Biomedical Optics·Yong ZhouLihong V Wang

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Citations

Apr 11, 2019·Journal of Biomedical Optics·Paul Kumar Upputuri, Manojit Pramanik
Nov 9, 2019·Physical Review Letters·X Luís Deán-BenDaniel Razansky
Mar 15, 2020·Scientific Reports·Sergey VilovEmmanuel Bossy
May 18, 2021·Biomedical Optics Express·Alycen Wiacek, Muyinatu A Lediju Bell

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