Improving visibility in photoacoustic imaging using dynamic speckle illumination

Jérôme Gateau, Thomas Chaigne, Ori Katz, Sylvain Gigan, Emmanuel Bossy*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

69 Scopus citations

Abstract

In high-frequency photoacoustic imaging with uniform illumination, homogeneous photoabsorbing structures may be invisible because of their large size or limited-view issues. Here we show that, by exploiting dynamic speckle illumination, it is possible to reveal features that are normally invisible with a photoacoustic system comprised of a 20 MHz linear ultrasound array. We demonstrate imaging of a Ø5 mm absorbing cylinder and a 30 μm black thread arranged in a complex shape. The hidden structures are directly retrieved from photoacoustic images recorded for different random speckle illuminations of the phantoms by assessing the variation in the value of each pixel over the illumination patterns.

Original languageAmerican English
Pages (from-to)5188-5191
Number of pages4
JournalOptics Letters
Volume38
Issue number23
DOIs
StatePublished - 1 Dec 2013
Externally publishedYes

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