Effect of sensor directionality on photoacoustic imaging: a study using the k-wave toolbox

B. T. Cox; B. E. Treeby

doi:10.1117/12.841671

23 February 2010 Effect of sensor directionality on photoacoustic imaging: a study using the k-wave toolbox

B. T. Cox, B. E. Treeby

Proceedings Volume 7564, Photons Plus Ultrasound: Imaging and Sensing 2010; 75640I (2010) https://doi.org/10.1117/12.841671
Event: SPIE BiOS, 2010, San Francisco, California, United States

Abstract

Most image reconstruction algorithms for biomedical photoacoustic tomography make the assumption that the optically-generated ultrasonic waves are recorded by pressure detectors with an omni-directional response. In other words, the detectors are assumed to sample the pressure field exactly at a point. In practice this is rarely the case as real detectors have a finite size and often respond not purely to pressure changes but to some combination of acoustic pressure and pressure gradient (or other derivatives). This can make them less sensitive to pressure waves at some angles. The effect of this sensor directionality on photoacoustic tomography was considered here for the case of time-reversal image reconstruction. The ultrasound simulation toolbox k-Wave was used to perform the study.

Citation Download Citation

B. T. Cox and B. E. Treeby "Effect of sensor directionality on photoacoustic imaging: a study using the k-wave toolbox", Proc. SPIE 7564, Photons Plus Ultrasound: Imaging and Sensing 2010, 75640I (23 February 2010); https://doi.org/10.1117/12.841671

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