Ultrasound-guided photoacoustic image reconstruction

Conference paper (2012)

Authors

P. Kruizinga Erasmus MC
Frits Mastik Erasmus MC
N. de Jong , Erasmus MC, Interuniversity Cardiology Institute of the Netherlands (ICIN)
Antonius F.W. van der Steen Interuniversity Cardiology Institute of the Netherlands (ICIN), Erasmus MC
G van Soest Erasmus MC
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Published Date

2012

Language

English

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Abstract

Photoacoustic signals originating from weak sources can be hard to discriminate from higher intensity signals resulting from the photoacoustic background. In order to reveal these weaker signals we propose a method where the expected background signal is subtracted from the actual signals. In this method an ultrasound image provides the geometry for the pressure distribution used in a photoacoustic wave field simulation. The simulated photoacoustic signals are subtracted from the actual recordings and the residual is used for image reconstruction. This method was successfully validated experimentally with a vessel phantom containing three optical absorption irregularities within the vessel wall.