Piezoelectric transducer based miniature catheter for ultrahigh speed endoscopic optical coherence tomography
Author(s)Tsai, Tsung-Han; Potsaid, Benjamin M.; Kraus, Martin Franz Georg; Liu, Jonathan Jaoshin; Zhou, Chao; Hornegger, Joachim; Fujimoto, James G.; ... Show more Show less
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We developed a piezoelectric transducer (PZT) based miniature catheter with an outer diameter of 3 mm for ultrahigh speed endoscopic optical coherence tomography (OCT) using Fourier domain modelocked (FDML) laser at a 480 kHz axial scan rate. The miniaturized PZT bender actuates a fiber to provide high scanning speed. 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. Operating with a high speed data acquisition (DAQ) system, OCT imaging with 6.5 mm imaging range, 10 μm axial resolution, 20 μm lateral resolution, and frame rate of 480 frames per second (fps) is demonstrated.
DepartmentMassachusetts Institute of Technology. Department of Electrical Engineering and Computer Science; Massachusetts Institute of Technology. Research Laboratory of Electronics
Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XV
Tsai, Tsung-Han et al. “Piezoelectric Transducer Based Miniature Catheter for Ultrahigh Speed Endoscopic Optical Coherence Tomography.” Proc. SPIE 7889, 788919 (2011). © 2011 Copyright SPIE
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