dc.contributor.authorJin, Haoran
dc.contributor.authorZhang, Ruochong
dc.contributor.authorLiu, Siyu
dc.contributor.authorZheng, Yuanjin
dc.identifier.citationJin, H., Zhang, R., Liu, S., & Zheng, Y. (2018). Passive ultrasound aided acoustic resolution photoacoustic microscopy imaging for layered heterogeneous media. Applied Physics Letters, 113(24), 241901-. doi:10.1063/1.5064417en_US
dc.description.abstractPhotoacoustic imaging reconstructions usually assume a known speed-of-sound (SOS) distribution; however, in most cases, the SOS distribution is not revealed and is difficult to estimate from photoacoustic signals. In this paper, we propose passive ultrasound aided acoustic resolution photoacoustic microscopy which simultaneously reconstructs SOS distributions and photoacoustic images for layered heterogeneous media. The passive ultrasound is a kind of laser-induced acoustic wave generated by a transducer absorbing the backscattered light. It can be used to measure the layer thicknesses due to its sensitivity to structural information and broad bandwidth and further determine the SOS distributions. After estimating the SOS distributions, a phase shift plus interpolation is employed to reconstruct the photoacoustic image for heterogeneous media. Without introducing additional hardware, this method can be conveniently incorporated into a conventional photoacoustic imaging system. A curved shell immersed in water is adopted as a layered heterogeneous phantom, and the proposed method reconstructs the targets (carbon rods) under this shell. Under the test of a 5 MHz focused transducer (NA 0.25), the maximum reconstruction deviation of 1.2 mm carbon rods is only 0.15 mm.en_US
dc.format.extent5 p.en_US
dc.relation.ispartofseriesApplied Physics Lettersen_US
dc.rights© 2018 The Author(s). All rights reserved. This paper was published by AIP Publishing in Applied Physics Letters and is made available with permission of The Author(s).en_US
dc.subjectPhotoacoustic Imagingen_US
dc.subjectSpeed-of-sound Distributionen_US
dc.subjectDRNTU::Engineering::Electrical and electronic engineeringen_US
dc.titlePassive ultrasound aided acoustic resolution photoacoustic microscopy imaging for layered heterogeneous mediaen_US
dc.typeJournal Article
dc.contributor.schoolSchool of Electrical and Electronic Engineeringen_US
dc.description.versionPublished versionen_US

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