20 March 2013 Ultrahigh speed endoscopic optical coherence tomography using micro-motor imaging catheter and VCSEL technology
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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.
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Tsung-Han Tsai, Tsung-Han Tsai, Yuankai K. Tao, Yuankai K. Tao, Benjamin M. Potsaid, Benjamin M. Potsaid, Vijaysekhar Jayaraman, Vijaysekhar Jayaraman, Martin F. Kraus, Martin F. Kraus, Peter J. S. Heim, Peter J. S. Heim, Joachim Hornegger, Joachim Hornegger, Hiroshi Mashimo, Hiroshi Mashimo, Alex E. Cable, Alex E. Cable, James G. Fujimoto, James G. Fujimoto, } "Ultrahigh speed endoscopic optical coherence tomography using micro-motor imaging catheter and VCSEL technology", Proc. SPIE 8571, Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XVII, 85710N (20 March 2013); doi: 10.1117/12.2006952; https://doi.org/10.1117/12.2006952
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