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Proceedings Paper

Preliminary tests on a new near-infrared continuous-wave tissue oximeter
Author(s): Claudia Casavola; Giuseppe Cicco; Anna Pirrelli; Pietro Mario Lugara
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Paper Abstract

We present a preliminary study, in vitro and in vivo, with a novel device for near-infrared tissue oximetry. The light sources used are two quasi-continuous-wave LEDs, emitting at 656 and 851 nm, and the detector is a photodiode. The data are acquired in back-scattering configuration, thus allowing the non-invasive characterization of thick tissues. Stability tests were performed by placing the optical probe on a tissue- like phantom and acquiring data for periods of time ranging from 5 to 40 minutes. No significant drifts in the DC signal were observed after a warm-up period of no more than 10 minutes. We performed reproducibility tests by repositioning the optical probe on the phantom for a number of times. We found a reproducibility better than 5% in the DC signal. We also present the results of a preliminary study conducted in vivo, on the calf muscle of human subjects. We report a comparison of the results obtained with the near-infrared oximeter with the values of blood oxygenation ctO2 measured with conventional chemical tests.

Paper Details

Date Published: 22 November 2000
PDF: 7 pages
Proc. SPIE 4160, Photon Migration, Diffuse Spectroscopy, and Optical Coherence Tomography: Imaging and Functional Assessment, (22 November 2000); doi: 10.1117/12.407618
Show Author Affiliations
Claudia Casavola, INFM (Italy)
Giuseppe Cicco, Univ. degli Studi di Bari (Italy)
Anna Pirrelli, Univ. degli Studi di Bari (Italy)
Pietro Mario Lugara, INFM (Italy)

Published in SPIE Proceedings Vol. 4160:
Photon Migration, Diffuse Spectroscopy, and Optical Coherence Tomography: Imaging and Functional Assessment
Stefan Andersson-Engels; James G. Fujimoto, Editor(s)

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