Share Email Print
cover

Proceedings Paper

System for clinical photometric stereo endoscopy
Author(s): Nicholas J. Durr; Germán González; Daryl Lim; Giovanni Traverso M.D.; Norman S. Nishioka M.D.; Benjamin J. Vakoc; Vicente Parot
Format Member Price Non-Member Price
PDF $17.00 $21.00

Paper Abstract

Photometric stereo endoscopy is a technique that captures information about the high-spatial-frequency topography of the field of view simultaneously with a conventional color image. Here we describe a system that will enable photometric stereo endoscopy to be clinically evaluated in the large intestine of human patients. The clinical photometric stereo endoscopy system consists of a commercial gastroscope, a commercial video processor, an image capturing and processing unit, custom synchronization electronics, white light LEDs, a set of four fibers with diffusing tips, and an alignment cap. The custom pieces that come into contact with the patient are composed of biocompatible materials that can be sterilized before use. The components can then be assembled in the endoscopy suite before use. The resulting endoscope has the same outer diameter as a conventional colonoscope (14 mm), plugs into a commercial video processor, captures topography and color images at 15 Hz, and displays the conventional color image to the gastroenterologist in real-time. We show that this system can capture a color and topographical video in a tubular colon phantom, demonstrating robustness to complex geometries and motion. The reported system is suitable for in vivo evaluation of photometric stereo endoscopy in the human large intestine.

Paper Details

Date Published: 27 February 2014
PDF: 6 pages
Proc. SPIE 8935, Advanced Biomedical and Clinical Diagnostic Systems XII, 89351F (27 February 2014); doi: 10.1117/12.2038119
Show Author Affiliations
Nicholas J. Durr, Massachusetts Institute of Technology (United States)
Wellman Ctr. for Photomedicine, Harvard Medical School, Massachusetts General Hospital (United States)
Germán González, Massachusetts Institute of Technology (United States)
Wellman Ctr. for Photomedicine, Harvard Medical School, Massachusetts General Hospital (United States)
Daryl Lim, Massachusetts Institute of Technology (United States)
Wellman Ctr. for Photomedicine, Harvard Medical School, Massachusetts General Hospital (United States)
Giovanni Traverso M.D., Harvard Medical School, Massachusetts General Hospital (United States)
Massachusetts Institute of Technology (United States)
Norman S. Nishioka M.D., Harvard Medical School, Massachusetts General Hospital (United States)
Benjamin J. Vakoc, Wellman Ctr. for Photomedicine, Harvard Medical School, Massachusetts General Hospital (United States)
Vicente Parot, Massachusetts Institute of Technology (United States)
Wellman Ctr. for Photomedicine, Harvard Medical School, Massachusetts General Hospital (United States)


Published in SPIE Proceedings Vol. 8935:
Advanced Biomedical and Clinical Diagnostic Systems XII
Tuan Vo-Dinh; Anita Mahadevan-Jansen; Warren S. Grundfest M.D., Editor(s)

© SPIE. Terms of Use
Back to Top
PREMIUM CONTENT
Sign in to read the full article
Create a free SPIE account to get access to
premium articles and original research
Forgot your username?
close_icon_gray