Clinical Chemistry
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Clinical Chemistry 33: 2070-2073, 1987;
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Clinical Chemistry, Vol 33, 2070-2073, Copyright © 1987 by American Association for Clinical Chemistry

Computer-aided infrared analysis of urinary calculi

M Berthelot, G Cornu, M Daudon, M Helbert and C Laurence
Laboratoire de Spectrochimie moleculaire, Faculte des Sciences, Nantes, France.

We have created a library of 497 digitized infrared spectra of 58 components of urinary calculi and of their usual binary and ternary mixtures. We tested the operation of the "Birsy" search program (Bruker Analytische Messtechnik) with this library for the interpretation of infrared spectra of 50 urinary calculi, selected from both classical and difficult cases. This program correctly identifies the two first components 98% of the time and the third (minor) component 70% of the time. Using this program, those without training or experience in infrared analysis can routinely use the infrared method of analysis of urinary calculi.




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Copyright © 1987 by the American Association for Clinical Chemistry.