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2016 ; 4
(1
): 22-35
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Photoacoustics with coherent light
#MMPMID27069874
Bossy E
; Gigan S
Photoacoustics
2016[Mar]; 4
(1
): 22-35
PMID27069874
show ga
Since its introduction in the mid-nineties, photoacoustic imaging of biological
tissue has been one of the fastest growing biomedical imaging modality, and its
basic principles are now considered as well established. In particular, light
propagation in photoacoustic imaging is generally considered from the perspective
of transport theory. However, recent breakthroughs in optics have shown that
coherent light propagating through optically scattering medium could be
manipulated towards novel imaging approaches. In this article, we first provide
an introduction to the relevant concepts in the field, and then review the recent
works showing that it is possible to exploit the coherence of light in
conjunction with photoacoustics. We illustrate how the photoacoustic effect can
be used as a powerful feedback mechanism for optical wavefront shaping in complex
media, and conversely show how the coherence of light can be exploited to enhance
photoacoustic imaging, for instance in terms of spatial resolution or for
designing minimally invasive endoscopic devices. Finally, we discuss the current
challenges and perspectives down the road towards practical applications in the
field of photoacoustic imaging.