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1 September 1991 Portable and very inexpensive optical fiber sensor for entero-gastric reflux detection
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Proceedings Volume 1510, Chemical and Medical Sensors; (1991)
Event: ECO4 (The Hague '91), 1991, The Hague, Netherlands
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.
© (1991) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
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);


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