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Proceedings Paper

Chemical analysis of human urinary and renal calculi by Raman laser fiber-optics method
Author(s): Nguyen Thi Diem Hong; Darith Phat; Pascal Plaza; Michel Daudon; Nguyen Quy Dao
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Paper 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 (

Paper Details

Date Published: 1 November 1991
PDF: 11 pages
Proc. SPIE 1525, Future Trends in Biomedical Applications of Lasers, (1 November 1991); doi: 10.1117/12.48213
Show Author Affiliations
Nguyen Thi Diem Hong, Ecole Centrale de Paris (France)
Darith Phat, Ecole Centrale de Paris (France)
Pascal Plaza, Ecole Centrale de Paris (France)
Michel Daudon, Ctr. Hospitalier de Saint-Cloud (France)
Nguyen Quy Dao, Ecole Central de Paris (France)


Published in SPIE Proceedings Vol. 1525:
Future Trends in Biomedical Applications of Lasers

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