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Journal of Biomedical Optics

Photoacoustic imaging of blood vessels with a double-ring sensor featuring a narrow angular aperture
Author(s): Srirang Manohar; Alexei Kharine; Johan G.C. van Hespen; Wiendelt Steenbergen; Ton G. J .M. van Leeuwen
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Paper Abstract

A photoacoustic double-ring sensor, featuring a narrow angular aperture, is developed for laser-induced photoacoustic imaging of blood vessels. An integrated optical fiber enables reflection-mode detection of ultrasonic waves. By using the cross-correlation between the signals detected by the two rings, the angular aperture of the sensor is reduced by a factor of 1.9, from 1.5 to 0.8 deg. Consequently, photoacoustic images could be obtained in a manner analogous to the ultrasound B-scan mode. Next, the cross section of artificial blood vessels is visualized by reconstruction of the absorbed energy distribution. Finally, in vivo imaging and the subsequent reconstruction of the absorbed energy distribution is demonstrated for superficial blood vessels in the human wrist.

Paper Details

Date Published: 1 November 2004
PDF: 9 pages
J. Biomed. Opt. 9(6) doi: 10.1117/1.1805556
Published in: Journal of Biomedical Optics Volume 9, Issue 6
Show Author Affiliations
Srirang Manohar, Univ. Twente (Netherlands)
Alexei Kharine, Univ. Twente (Netherlands)
Johan G.C. van Hespen, Univ. Twente (Netherlands)
Wiendelt Steenbergen, Univ. Twente (Netherlands)
Ton G. J .M. van Leeuwen, Univ. Twente (Netherlands)

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