Identificationof Urinary Calculi by Raman Laser Fiber ... - CiteSeerX

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May 8, 1991 - Saint-Cloud Hospital-either synthetic or ..... Regional Hospital, Cork, Ireland. 2Biemisby. Department,. University of Limerick, Plassy,. Limerick ...
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CLIN. CHEM. 38/2, 292-298 (1992)

Identificationof Urinary Calculi by Raman Laser Fiber Optics Spectroscopy T. D. Nguyen

Hong,’

D. That,’

P. Plaza,’ M. Daudon,2 and Nguyen Quy Dao”3

Human calculi of various compositions were automatically by using near-infrared excitation Fourier-transform Raman spectrometty. After having built a 150-compound Raman libraty as a first step, we used a commercial software for infrared spectra (program BIRSY,from BrUker) to determine the composition of differentcalculi.Good results were obtained for both classical Raman laser and Raman laser fiber optics spectroscopies. With the use of a natural biological medium, e.g., urine, to mimic as closely as possible dinical in vivo conditions, the automatic search correctly identified the calculus composition with relatively good test quality; in some mixtures, however, the results can only be considered semi-quantitative at present, even after smoothing of the spectra. identified

Addftlonal

K.yphrues:

cholellthiasis

pninVW

procedures

The development of new in situ calculi fragmentation methods by endoacopic or extracorporeal means has revolutionized the urologic treatment of lithiasic disease, reducing to