Concomitant speed-of-sound tomography in photoacoustic imaging

Manohar, Srirang and Willemink, Rene G.H. and Heijden van der, Ferdi and Slump, Cornelis H. and Leeuwen van, Ton G. (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)
Research Group:	Biomedical Photonic Imaging (BMPI) Signals and Systems (SAS)
Link to this item:	http://purl.utwente.nl/publications/62165
Official URL:	http://dx.doi.org/10.1063/1.2789689
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