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Biomedical Optics Express

Biomedical Optics Express

  • Editor: Joseph A. Izatt
  • Vol. 2, Iss. 8 — Aug. 1, 2011
  • pp: 2438–2448

Piezoelectric-transducer-based miniature catheter for ultrahigh-speed endoscopic optical coherence tomography

Tsung-Han Tsai, Benjamin Potsaid, Martin F. Kraus, Chao Zhou, Yuankai K. Tao, Joachim Hornegger, and James G. Fujimoto  »View Author Affiliations


Biomedical Optics Express, Vol. 2, Issue 8, pp. 2438-2448 (2011)
http://dx.doi.org/10.1364/BOE.2.002438


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Abstract

We developed a piezoelectric-transducer- (PZT) based miniature catheter with an outer diameter of 3.5 mm for ultrahigh-speed endoscopic optical coherence tomography (OCT). A miniaturized PZT bender actuates a fiber and the beam is scanned through a GRIN lens and micro-prism to provide high-speed, side-viewing capability. The probe optics can be pulled back over a long distance to acquire three-dimensional (3D) data sets covering a large area. Imaging is performed with 11 μm axial resolution in air (8 μm in tissue) and 20 μm transverse resolution, at 960 frames per second with a Fourier domain mode-locked laser operating at 480 kHz axial scan rate. Using a high-speed data acquisition system, endoscopic OCT imaging of the rabbit esophagus and colon in vivo and human colon specimens ex vivo is demonstrated.

© 2011 OSA

OCIS Codes
(110.2350) Imaging systems : Fiber optics imaging
(120.3890) Instrumentation, measurement, and metrology : Medical optics instrumentation
(120.5800) Instrumentation, measurement, and metrology : Scanners
(140.3600) Lasers and laser optics : Lasers, tunable
(170.2150) Medical optics and biotechnology : Endoscopic imaging
(170.2680) Medical optics and biotechnology : Gastrointestinal
(170.3880) Medical optics and biotechnology : Medical and biological imaging
(170.4500) Medical optics and biotechnology : Optical coherence tomography

ToC Category:
Endoscopes, Catheters and Micro-Optics

History
Original Manuscript: June 2, 2011
Manuscript Accepted: June 17, 2011
Published: July 29, 2011

Citation
Tsung-Han Tsai, Benjamin Potsaid, Martin F. Kraus, Chao Zhou, Yuankai K. Tao, Joachim Hornegger, and James G. Fujimoto, "Piezoelectric-transducer-based miniature catheter for ultrahigh-speed endoscopic optical coherence tomography," Biomed. Opt. Express 2, 2438-2448 (2011)
http://www.opticsinfobase.org/boe/abstract.cfm?URI=boe-2-8-2438


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