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Proceedings Paper

Ultrahigh speed endoscopic optical coherence tomography using micro-motor imaging catheter and VCSEL technology
Author(s): Tsung-Han Tsai; Yuankai K. Tao; Benjamin M. Potsaid; Vijaysekhar Jayaraman; Martin F. Kraus; Peter J. S. Heim; Joachim Hornegger; Hiroshi Mashimo; Alex E. Cable; James G. Fujimoto
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Paper Abstract

We developed a micro-motor based miniature catheter with an outer diameter of 3mm for ultrahigh speed endoscopic optical coherence tomography (OCT) using vertical cavity surface-emitting laser (VCSEL) at a 1MHz axial scan rate. The micro-motor can rotate a micro-prism at 1,200-72,000rpm (corresponding to 20- 1,200fps) with less than 5V driving voltage to provide fast and stable scanning, which is not sensitive to the bending of the catheter. The side-viewing probe can be pulled back for a long distance to acquire three-dimensional (3D) dataset covering a large area on the specimen. VCSEL provides high a-line rate to support dense sampling under high frame rate operation. With the use of a C++ based high speed data acquisition (DAQ) system, in vivo three-dimensional OCT imaging in rabbit GI tract with 1.6mm depth range, 11μm axial resolution, 8μm lateral resolution, and frame rate of 400fps is demonstrated.

Paper Details

Date Published: 20 March 2013
PDF: 6 pages
Proc. SPIE 8571, Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XVII, 85710N (20 March 2013); doi: 10.1117/12.2006952
Show Author Affiliations
Tsung-Han Tsai, Massachusetts Institute of Technology (United States)
Yuankai K. Tao, Massachusetts Institute of Technology (United States)
Benjamin M. Potsaid, Massachusetts Institute of Technology (United States)
Thorlabs, Inc. (United States)
Vijaysekhar Jayaraman, Pravium Research, Inc. (United States)
Martin F. Kraus, Massachusetts Institute of Technology (United States)
Univ. Erlangen-Nuremberg (Germany)
Peter J. S. Heim, Thorlabs Quantum Electronics, Inc. (United States)
Joachim Hornegger, Univ. Erlangen-Nuremberg (Germany)
Hiroshi Mashimo, Veterans Affairs Healthcare System Boston (United States)
Harvard Medical School (United States)
Alex E. Cable, Thorlabs, Inc. (United States)
James G. Fujimoto, Massachusetts Institute of Technology (United States)


Published in SPIE Proceedings Vol. 8571:
Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XVII
James G. Fujimoto; Joseph A. Izatt; Valery V. Tuchin, Editor(s)

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