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- W2076426255 abstract "We report the first experimental investigations of photoacoustic guidance of diffusive optical tomography for detection and characterization of optical contrast targets. The hybrid system combined an 8-source, 10-detector reflection mode frequency domain DOT imager with either orthogonal and reflection-geometry photoacoustic systems. The PAT subsystems imaged two-dimensional cross-sections to define centers and radii of regions of interest for a dual-zone mesh DOT imaging algorithm. Phantom absorbers, 1 cm in diameter, of high and low contrast, were spaced 1.5 to 2.5 cm apart at depths ranging from 1 to 2 cm in a turbid medium. Without PAT guidance, the absorber DOT images in many cases were merged and indistinguishable. With PAT guidance, the two targets were well resolved and the reconstructed absorption coefficients improved to 86-130% of the true values. In addition, using both pulse-echo and photoacoustic image detection, the photoacoustic guidance correctly distinguished mechanical from optical contrast providing more specific target information and reconstruction accuracy." @default.
- W2076426255 created "2016-06-24" @default.
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- W2076426255 date "2008-02-07" @default.
- W2076426255 modified "2023-09-23" @default.
- W2076426255 title "Investigation of photoacoustic guidance of diffusive optical tomography" @default.
- W2076426255 doi "https://doi.org/10.1117/12.769235" @default.
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