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- W4386091566 abstract "We propose an approach for the simultaneous reconstruction of the electromagnetic and acoustic material parameters, in the given medium where we want to image, using the photoacoustic pressure, measured on a single point of the boundary of , generated by plasmonic nanoparticles injected inside . As measurements, we use the generated pressure, that we denote by , depending on only one fixed point , where we measure, the time variable , in a large enough interval, and the incidence frequency , in a large enough band. These measurements are repeated while the location of the nanoparticle is moved inside to scan it. We show that these measurements (which are in terms of dimensionality) are enough to reconstruct both the sound speed, the mass density, and the permittivity inside (i.e., coefficients of each in terms of dimensionality). Indeed, from the behavior of the measured pressure in terms of time, we can estimate the travel time of the pressure, for arriving points inside , then using the eikonal equation we reconstruct the acoustic speed of propagation, inside . In addition, we reconstruct the internal values of the acoustic Green’s function. From the singularity analysis of this Green’s function, we extract the integrals along the geodesics, for internal arriving points, of the logarithmic gradient of the mass density. Solving this (internal) integral geometric problem provides us with the values of the mass density function inside . Finally, from the behavior of with respect to the frequency , we detect the generated plasmonic resonances from which we reconstruct the permittivity inside ." @default.
- W4386091566 created "2023-08-24" @default.
- W4386091566 creator A5056897147 @default.
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- W4386091566 date "2023-08-23" @default.
- W4386091566 modified "2023-09-26" @default.
- W4386091566 title "Simultaneous Reconstruction of Optical and Acoustical Properties in Photoacoustic Imaging Using Plasmonics" @default.
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- W4386091566 doi "https://doi.org/10.1137/22m1534730" @default.
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