Chemical analysis of human urinary and renal calculi by Raman laser fiber-optics method

Nguyen Thi Diem Hong; Darith Phat; Pascal Plaza; Michel Daudon; Nguyen Quy Dao

doi:10.1117/12.48213

1 November 1991 Chemical analysis of human urinary and renal calculi by Raman laser fiber-optics method

Nguyen Thi Diem Hong, Darith Phat, Pascal Plaza, Michel Daudon, Nguyen Quy Dao

Proceedings Volume 1525, Future Trends in Biomedical Applications of Lasers; (1991) https://doi.org/10.1117/12.48213
Event: MedTech '91, 1991, Berlin, Germany

Abstract

The Raman laser fiberoptics (RLFO) method using Raman spectroscopy for determination of chemical composition and optical fibers allowing multiplex, in situ, and remote possibilities, enabled chemical analysis of various human urinary and renal calculi. Raman spectra of about 40 constituents (synthetic or natural) in the authors''s possession and its 437 various binary and ternary mixtures are recorded using 1.06 micrometers radiation of a Nd:YAG laser and a FT Raman interferometer. These spectra--most of them are fluorescence free--constituted the calculi library. In the presence of urine, unknown stones can then be identified by RLFO method using an automatic computer procedure (at the present time, the Bruker IR search program is used). The results obtained for the identification of the stones are satisfactory. Major constituents of a complex calculus (

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Nguyen Thi Diem Hong, Darith Phat, Pascal Plaza, Michel Daudon, and Nguyen Quy Dao "Chemical analysis of human urinary and renal calculi by Raman laser fiber-optics method", Proc. SPIE 1525, Future Trends in Biomedical Applications of Lasers, (1 November 1991); https://doi.org/10.1117/12.48213

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