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Real-time Swept Source Optical Coherence Tomography Imaging of the Human Airway Using a Microelectromechanical System Endoscope and Digital Signal Processor

Overview
Journal J Biomed Opt
Specialties Biomedical Engineering
Ophthalmology
Date 2008 Jul 8
PMID 18601523
Citations 19
Authors
Jianping Su
Jun Zhang
Lingfeng Yu
Henri G Colt
Matthew Brenner
Zhongping Chen
Affiliations
Soon will be listed here.
Abstract

A fast-scan-rate swept laser for optical coherence tomography (OCT) is suitable to record and analyze a 3-D image volume. However, the whole OCT system speed is limited by data streaming, processing, and storage. In this case, postprocessing is a common technique. Endoscopic clinical applications prefer onsite diagnosis, which requires a real-time technique. Parallel digital signal processors were applied to stream and process data directly from a data digitizer. A real-time system with 20-kHz axial line speed, which was limited only by our swept laser scan rate, was implemented. To couple with the system speed, an endoscope based on an improved 3-D microelectromechanical motor (diameter 1.5 mm, length 9.4 mm) was developed. In vivo 3-D imaging of the human airway was demonstrated.

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