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Dean-Ben, X.L. ; Pang, G.A. ; de Espinosa, F.M.* ; Razansky, D.

Non-contact optoacoustic imaging with focused air-coupled transducers.

Appl. Phys. Lett. 107:051105 (2015)
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Non-contact optoacoustic imaging employing raster-scanning of a spherically focused air-coupled ultrasound transducer is showcased herein. Optoacoustic excitation with laser fluence within the maximal permissible human exposure limits in the visible and near-infrared spectra is applied to objects with characteristic dimensions smaller than 1 mm and absorption properties representative of the whole blood at near-infrared wavelengths, and these signals are shown to be detectable without contact to the sample using an air-coupled transducer with reasonable signal averaging. Optoacoustic images of vessel-mimicking tubes embedded in an agar phantom captured with this non-contact sensing technique are also showcased. These initial results indicate that an air-coupled ultrasound detection approach can be suitable for non-contact biomedical imaging with optoacoustics.
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Publikationstyp Artikel: Journalartikel
Dokumenttyp Wissenschaftlicher Artikel
Schlagwörter Photoacoustic Microscopy; In-vivo; Tomography; Interferometer; Detector; Cancer; Organs; Array
ISSN (print) / ISBN 0003-6951
e-ISSN 1077-3118
Quellenangaben Band: 107, Heft: 5, Seiten: , Artikelnummer: 051105 Supplement: ,
Verlag American Institute of Physics (AIP)
Verlagsort Melville
Begutachtungsstatus Peer reviewed