A fiber optic optoacoustic ultrasound sensor for photoacoustic endoscopy

Clay Sheaff, Shai Ashkenazi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

11 Scopus citations

Abstract

Photoacoustic Endoscopy (PE) is a new imaging modality that can providehigh-resolution vascular imaging in vivo. Optoacoustic sensing (opticaldetection of ultrasound) is a good candidate for PE due to its enhancedsensitivity, wide bandwidth, and miniaturizability in comparison topiezoelectric, PVDF, and capacitive transducers. In this work we present thefabrication and testing of a fiber optic optoacoustic ultrasound sensor (fiberetalon), and we propose the development of a rectilinear ultrasound array for PEbased on this device. The design entails the bundling of several fiber etalonswhich, when combined with photoacoustic excitation, would yield a flexible andcompact, forward-viewing photoacoustic endoscope. To simulate the performance ofa bundled device, we have mechanically scanned a single fiber etalon to imagesimple photoacoustic targets. The results demonstrate the viability of using afiber optic-based photoacoustic endoscope to image optically absorptivestructures such as blood in vasculature. A potentially significant applicationof our device could be the monitoring of angiogenesis an early marker of tumorformation.

Original languageEnglish (US)
Title of host publication2010 IEEE International Ultrasonics Symposium, IUS 2010
Pages2135-2138
Number of pages4
DOIs
StatePublished - Dec 1 2010
Event2010 IEEE International Ultrasonics Symposium, IUS 2010 - San Diego, CA, United States
Duration: Oct 11 2010Oct 14 2010

Publication series

NameProceedings - IEEE Ultrasonics Symposium
ISSN (Print)1051-0117

Other

Other2010 IEEE International Ultrasonics Symposium, IUS 2010
Country/TerritoryUnited States
CitySan Diego, CA
Period10/11/1010/14/10

Keywords

  • endoscopy
  • optoacoustic
  • photoacoustic
  • vascular

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