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Publication Detail
Broadband miniature optical ultrasound probe for high resolution vascular tissue imaging
  • Publication Type:
    Journal article
  • Publication Sub Type:
    article
  • Authors:
    Colchester RJ, Zhang EZ, Mosse CA, Beard PC, Papakonstantinou I, Desjardins AE
  • Publisher:
    OSA
  • Publication date:
    04/2015
  • Pagination:
    1502, 1511
  • Journal:
    Biomed. Opt. Express
  • Volume:
    6
  • Article number:
    4
  • Notes:
    keywords: Fiber optics sources and detectors; Fiber optics imaging; Imaging systems; Ultrasound; Photoacoustics
Abstract
An all-optical ultrasound probe for vascular tissue imaging was developed. Ultrasound was generated by pulsed laser illumination of a functionalized carbon nanotube composite coating on the end face of an optical fiber. Ultrasound was detected with a Fabry-Pérot (FP) cavity on the end face of an adjacent optical fiber. The probe diameter was < 0.84 mm and had an ultrasound bandwidth of 20 MHz. The probe was translated across the tissue sample to create a virtual linear array of ultrasound transmit/receive elements. At a depth of 3.5 mm, the axial resolution was 64 µm and the lateral resolution was 88 µm, as measured with a carbon fiber target. Vascular tissues from swine were imaged ex vivo and good correspondence to histology was observed.
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