Concomitant speed-of-sound tomography in photoacoustic imaging

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Abstract

We present a method to generate quantitative cross-sectional maps of acoustic propagation speed in tissue using the photoacoustic principle. The method is based on the interaction of laser-induced ultrasound from an extraneous absorber with the object under photoacoustic investigation. The propagation times of the ultrasound transients through the object at angles around 360° are measured using a multielement ultrasound detector. The geometry lends itself to fan-beam reconstruction allowing speed-of-sound tomograms to be generated. Simultaneously, conventional photoacoustic computed tomography can be performed as well. We demonstrate the concept showing results on phantoms carrying speed-of-sound distributions.
Original languageUndefined
Article number10.1063/1.2789689
Pages (from-to)1-3
Number of pages3
JournalApplied physics letters
Volume91
Issue number13
DOIs
Publication statusPublished - 28 Sep 2007

Keywords

  • EWI-11902
  • IR-62165
  • METIS-243177

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