Title :
Lens scanning based MEMS catheter for forward endoscopic optical coherence tomography
Author :
Park, H.C. ; Song, C. ; Jeong, K.H.
Author_Institution :
Dept. of Bio & Brain Eng., Korea Adv. Inst. of Sci. & Technol. (KAIST), Daejeon, South Korea
Abstract :
Real-time in-vivo forward-viewing optical coherence tomography imaging has been demonstrated with a novel lens scanning based MEMS endoscope catheter. An endoscopic catheter with an outer dimension of 7 mm × 7 mm has been designed, manufactured and assembled. By employing high-speed spectral domain optical coherence tomography, in-vivo two-dimensional cross-sectional images of human skin tissues were obtained as a preliminary study. Imaging speed of 122 frames per second and axial resolution of 7.7 μm are accomplished. The operation voltages are only DC 3 V and AC 6 Vpp at resonance frequency of 122 Hz. The catheter can provide many opportunities for clinical applications such as compact packaging, long working distance and body safe low operating voltages.
Keywords :
bioMEMS; biomedical optical imaging; catheters; endoscopes; lenses; optical tomography; skin; MEMS endoscope catheter; compact packaging; forward endoscopic optical coherence tomography; frequency 122 Hz; high speed spectral domain optical coherence tomography; human skin tissue; lens scanning; voltage 3 V; voltage 6 V; Biomedical optical imaging; Catheters; High speed optical techniques; Lenses; Optical fibers; Optical imaging; Endoscopic catheter; Lens scanner; Micro-optical bench; Optical Coherence Tomography (OCT); Spectral Domain Optical Coherence Tomography (SD-OCT);
Conference_Titel :
Solid-State Sensors, Actuators and Microsystems Conference (TRANSDUCERS), 2011 16th International
Conference_Location :
Beijing
Print_ISBN :
978-1-4577-0157-3
DOI :
10.1109/TRANSDUCERS.2011.5969750
