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Technical Briefs

All-Optical Photoacoustic Detection of Absorbers in Tissue Phantoms

[+] Author and Article Information
Michelle Sabick

Department of Mechanical and Biomedical Engineering,
Boise State University

Kasper VanWijk

Department of Geosciences,
Boise State University

Manuscript received March 15, 2013; final manuscript received April 29, 2013; published online July 3, 2013. Assoc. Editor: Arthur G. Erdman.

J. Med. Devices 7(3), 030901 (Jul 03, 2013) (2 pages) Paper No: MED-13-1032; doi: 10.1115/1.4024483 History: Received March 15, 2013; Revised April 29, 2013

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Copyright © 2013 by ASME
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Grahic Jump Location
Fig. 1

Experimental set-up, with thin-walled tube and dye shown in tissue phantom. The pulsed source beam is incident on the phantom surface. Photoacoustic waves are generated at the surface and in the tube, which are detected with an interferometer on the opposite surface.

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Fig. 2

A-scan measurements from middle of scan, with PA waves generated by infrared dye in tubes (a) 34 mm, (b) 20 mm, and (c) 13 mm below the surface and (d) ultrasound wave generated at the surface of the phantom (source-side).

Grahic Jump Location
Fig. 3

B-scan of phantom with tube and dye 34 mm below the source-surface. The wave generated (a) 34 mm below the surface and (b) at the phantom surface are indicated by arrows. The time of arrival of the waves generated at both the surface and tube increases hyperbolically as the detection beam scans away from the source and tube.

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