Concomitant speed-of-sound tomography in photoacoustic imaging

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Manohar, Srirang and Willemink, Rene G.H. and Heijden, Ferdi van der and Slump, Cornelis H. and Leeuwen, Ton G. van (2007) Concomitant speed-of-sound tomography in photoacoustic imaging. Applied physics letters, 91 (13). p. 131911. ISSN 0003-6951

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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.
Item Type:Article
Copyright:© 2007 American Institute of Physics
Faculty:
Science and Technology (TNW)
Electrical Engineering, Mathematics and Computer Science (EEMCS)
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Link to this item:http://purl.utwente.nl/publications/62165
Official URL:http://dx.doi.org/10.1063/1.2789689
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