Ultrasound-transmission parameter imaging in a photoacoustic imager

J. Jose, Rene Willemink, Steffen Resink, T. Maalderink, Johannes C.G. van Hespen, Ton van Leeuwen, Srirang Manohar

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

2 Citations (Scopus)

Abstract

We present a 'hybrid' imaging system, which can image both optical absorption properties and acoustic transmission properties of an object in a two-dimensional slice using a computed tomography photoacoustic imager. The ultrasound transmission measurement method uses a strong absorber of light which is placed in the path of the light illuminating the sample. This acts as a source of ultrasound, whose interaction with the sample can be measured at the far-end of the sample using the same ultrasound detector used for photoacoustics. Such measurements are made at various angles around the sample in a computerized tomography approach. The ultrasound transients at the multi-element detector at all projections are analyzed for both times-of-arrival and amplitude. Using a fan-beam projection reconstruction algorithm we obtain hybrid images of optical absorption, speed-of-sound and acoustic attenuation. We validate the method on an appropriate phantom
Original languageEnglish
Title of host publicationNovel Optical Instrumentation for Biomedical Applications IV
EditorsChristian D. Depeursinge, I. Alex Vitkin
Place of PublicationMunich
PublisherSPIE
Number of pages8
ISBN (Print)9780819476470
DOIs
Publication statusPublished - 2009
EventNovel Optical Instrumentation for Biomedical Applications IV - Munich, Germany
Duration: 14 Jun 200914 Jun 2009

Publication series

NameProceedings of SPIE
PublisherSPIE/OSA
Volume7371
ISSN (Print)1605-7422

Conference

ConferenceNovel Optical Instrumentation for Biomedical Applications IV
Period14/06/0914/06/09
OtherSunday 14 June 2009

Keywords

  • (110.5120) Photoacoustic imaging
  • (110.7170) Ultrasound
  • METIS-259634
  • IR-77736

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