System for clinical photometric stereo endoscopy

Nicholas J. Durr; Germán González; Daryl Lim; Giovanni Traverso M.D.; Norman S. Nishioka M.D.; Benjamin J. Vakoc; Vicente Parot

doi:10.1117/12.2038119

27 February 2014 System for clinical photometric stereo endoscopy

Nicholas J. Durr, Germán González, Daryl Lim, Giovanni Traverso M.D., Norman S. Nishioka M.D., Benjamin J. Vakoc, Vicente Parot

Author Affiliations +

Proceedings Volume 8935, Advanced Biomedical and Clinical Diagnostic Systems XII; 89351F (2014) https://doi.org/10.1117/12.2038119
Event: SPIE BiOS, 2014, San Francisco, California, United States

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.

Citation Download Citation

Nicholas J. Durr, Germán González, Daryl Lim, Giovanni Traverso M.D., Norman S. Nishioka M.D., Benjamin J. Vakoc, and Vicente Parot "System for clinical photometric stereo endoscopy", Proc. SPIE 8935, Advanced Biomedical and Clinical Diagnostic Systems XII, 89351F (27 February 2014); https://doi.org/10.1117/12.2038119

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