Portable and very inexpensive optical fiber sensor for entero-gastric reflux detection

Francesco Baldini; Riccardo Falciai; Paolo Bechi; Franco Cosi; Andrea Bini; Francesco Milanesi

doi:10.1117/12.47124

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1 September 1991 Portable and very inexpensive optical fiber sensor for entero-gastric reflux detection

Francesco Baldini; Riccardo Falciai; Paolo Bechi; Franco Cosi; Andrea Bini; Francesco Milanesi

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Proceedings Volume 1510, Chemical and Medical Sensors; (1991) https://doi.org/10.1117/12.47124
Event: ECO4 (The Hague '91), 1991, The Hague, Netherlands

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.

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Francesco Baldini, Riccardo Falciai, Paolo Bechi, Franco Cosi, Andrea Bini, and Francesco Milanesi "Portable and very inexpensive optical fiber sensor for entero-gastric reflux detection", Proc. SPIE 1510, Chemical and Medical Sensors, (1 September 1991); https://doi.org/10.1117/12.47124

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