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Proceedings Paper

Portable and very inexpensive optical fiber sensor for entero-gastric reflux detection
Author(s): Francesco Baldini; Riccardo Falciai; Paolo Bechi; Franco Cosi; Andrea Bini; Francesco Milanesi
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Paper Abstract

A very compact and easily-transportable optical-fiber sensor for 'in vivo' detection of bile reflux from the duodenum into the stomach (entero-gastric reflux) has been developed. It makes use of two light-emitting diodes (for signal and reference, respectively) and of a special electronic circuit which processes the signals and provides the readout on a display. Quartz and plastic fiber bundles are used and compared in order to obtain the best solution in terms of signal levels and price. A suitable probe was specially designed and made finalized for 'in vivo' measurements. Measurements with the optical sensor were performed on several patients. A comparison with the traditional indirect method of detection, based on a change in acidity inside the stomach, showed the eminently greater suitability of the optical sensor for detection of entero-gastric reflux.

Paper Details

Date Published: 1 September 1991
PDF: 5 pages
Proc. SPIE 1510, Chemical and Medical Sensors, (1 September 1991); doi: 10.1117/12.47124
Show Author Affiliations
Francesco Baldini, IROE/CNR (Italy)
Riccardo Falciai, IROE/CNR (Italy)
Paolo Bechi, Univ. di Firenze (Italy)
Franco Cosi, IROE/CNR (Italy)
Andrea Bini, Prodotec srl (Italy)
Francesco Milanesi, Prodotec srl (Italy)

Published in SPIE Proceedings Vol. 1510:
Chemical and Medical Sensors
Otto S. Wolfbeis, Editor(s)

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