Synthetic focusing in ultrasound modulated tomography

Details Synthetic focusing in ultrasound modulated tomography Synthetic focusing in ultrasound modulated tomography

2009-01-16

arxiv.org/abs/0901.2552v1

Inverse Problems and Imaging, Volume 4, No. 4, 2010, p. 665-673

Mathematics

Analysis of PDEs

Dedicated to Jan Boman's 75th birthday

Scientific paper

10.3934/ipi.2010.4.665

Several hybrid tomographic methods utilizing ultrasound modulation have been introduced lately. Success of these methods hinges on the feasibility of focusing ultrasound waves at an arbitrary point of interest. Such a focusing, however, is difficult to achieve in practice. We thus propose a way to avoid the use of focused waves through the so called synthetic focusing, i.e. by the reconstruction of the would-be response to the focused modulation from the measurements corresponding to realistic unfocused waves. Examples of reconstructions from simulated data are provided. This non-technical paper describes only the general concept, while technical details will appear elsewhere.

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