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Proceedings Paper

Endoscopic optical coherence tomography imaging for surgical diagnostics and guidance in the gastrointestinal tract
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Paper Abstract

Technologies capable of imaging subsurface tissue structures offer improved visualization for surgical diagnostics and guidance. Endoscopic ultrasound catheters have been used for imaging the upper and lower gastrointestinal tract with 50 - 100 micrometers resolution. However, these resolutions are insufficient to resolve epithelial layers or early epithelial changes which occur in neoplasias and Barrett's esophagus. Optical coherence tomography (OCT) is a fiber- optic based imaging technology capable of acquiring in vivo image data of biological tissue at real-time rates and at resolutions 10 times higher than clinical endoscopic ultrasound. Using a compact amplifier super-luminescent diode light source, a portable OCT system has been constructed for use with minimally invasive endoscopic and surgical instruments including catheters, laparoscopes, microscopes, and hand-held surgical probes. The in vivo rabbit gastrointestinal tract is used as a model system. Beam delivery is accomplished with a radial-imaging OCT catheter that can be inserted into the working channel of an endoscope. This in vivo demonstration suggests that resolutions and acquisition rates are sufficient for imaging the human gastrointestinal tract. OCT shows promise for high-resolution image-guidance during diagnostic and surgical procedures.

Paper Details

Date Published: 9 July 1999
PDF: 7 pages
Proc. SPIE 3595, Biomedical Diagnostic, Guidance, and Surgical-Assist Systems, (9 July 1999); doi: 10.1117/12.351529
Show Author Affiliations
Stephen A. Boppart, Massachusetts Institute of Technology (United States)
Xing De Li, Massachusetts Institute of Technology (United States)
Constantinos Pitris, Massachusetts Institute of Technology (United States)
Debra L. Stamper, King's College (United States)
Mark E. Brezinski, Massachusetts General Hospital and Harvard Medical School (United States)
James G. Fujimoto, Massachusetts Institute of Technology (United States)

Published in SPIE Proceedings Vol. 3595:
Biomedical Diagnostic, Guidance, and Surgical-Assist Systems
Tuan Vo-Dinh; Warren S. Grundfest; David A. Benaron; Steven T. Charles; Richard D. Bucholz; Michael W. Vannier, Editor(s)

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