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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics


  • Editor: Gregory W. Faris
  • Vol. 2, Iss. 7 — Jul. 16, 2007

Photoacoustic tomography using a Mach–Zehnder interferometer as an acoustic line detector

Guenther Paltauf, Robert Nuster, Markus Haltmeier, and Peter Burgholzer  »View Author Affiliations

Applied Optics, Vol. 46, Issue 16, pp. 3352-3358 (2007)

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A three-dimensional photoacoustic imaging method is presented that uses a Mach–Zehnder interferometer for measurement of acoustic waves generated in an object by irradiation with short laser pulses. The signals acquired with the interferometer correspond to line integrals over the acoustic wave field. An algorithm for reconstruction of a three-dimensional image from such signals measured at multiple positions around the object is shown that is a combination of a frequency-domain technique and the inverse Radon transform. From images of a small source scanning across the interferometer beam it is estimated that the spatial resolution of the imaging system is in the range of 100 to about 300 μ m , depending on the interferometer beam width and the size of the aperture formed by the scan length divided by the source–detector distance. By taking an image of a phantom it could be shown that the imaging system in its present configuration is capable of producing three-dimensional images of objects with an overall size in the range of several millimeters to centimeters. Strategies are proposed how the technique can be scaled for imaging of smaller objects with higher resolution.

© 2007 Optical Society of America

OCIS Codes
(110.5120) Imaging systems : Photoacoustic imaging
(110.6960) Imaging systems : Tomography

ToC Category:
Imaging Systems

Original Manuscript: May 22, 2006
Revised Manuscript: December 14, 2006
Manuscript Accepted: January 2, 2007
Published: May 15, 2007

Virtual Issues
Vol. 2, Iss. 7 Virtual Journal for Biomedical Optics

Guenther Paltauf, Robert Nuster, Markus Haltmeier, and Peter Burgholzer, "Photoacoustic tomography using a Mach-Zehnder interferometer as an acoustic line detector," Appl. Opt. 46, 3352-3358 (2007)

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