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Proceedings Paper

Photoacoustic cross-correlation high-frame-rate and phase spectroscopy: two new biomedical imaging modalities
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Paper Abstract

In this study, we present some examples of waveform engineering applications in frequency-domain photoacoustics (PA). An example of using linear frequency modulation (LFM) for PA spectroscopy is the capability of simultaneous probing/imaging with multiple wavelengths. Use of mismatched coded waveforms enables encoding the signal sources and, therefore, facilitates simultaneous probing and imaging. This method enables high frame rate functional imaging with reduced motion artifacts. Furthermore, it is shown than that phase of the PA cross-correlation induced with a LFM can yield the absolute absorption coefficient of the chromophores. This method is not affected by fluence attenuation or variation due to the absorption and scattering of the overlayer material.

Paper Details

Date Published: 15 March 2016
PDF: 6 pages
Proc. SPIE 9708, Photons Plus Ultrasound: Imaging and Sensing 2016, 97081J (15 March 2016); doi: 10.1117/12.2214159
Show Author Affiliations
Bahman Lashkari, Univ. of Toronto (Canada)
Sung soo (Sean) Choi, Univ. of Toronto (Canada)
Edem Dovlo, Univ. of Toronto (Canada)
Andreas Mandelis, Univ. of Toronto (Canada)

Published in SPIE Proceedings Vol. 9708:
Photons Plus Ultrasound: Imaging and Sensing 2016
Alexander A. Oraevsky; Lihong V. Wang, Editor(s)

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