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Pilot study of the qualitative analysis of urinary stones by near infrared spectroscopy and chemometrics
* 1 , 2 , 1
1  Saint Petersburg State University, Institute of chemistry
2  S. M. Kirov Military Medical Academy, Department of urology
Academic Editor: Nicole Jaffrezic-Renault

Abstract:

Urolithiasis is one of most common urogenital diseases. Its diagnosis and treatment require an efficient analytical method of determination of chemical composition of a urinary stone, ideally, during the surgery. Near infrared spectroscopy seems to be a promising method for intraoperative qualitative analysis of urinary stones (calcium oxalates, uric acid, etc.), providing fast measurements and portable equipment. In this work, the results of a pilot study of analyzing several urinary stones with different chemical composition (dry and soaked in saline) within the 939-1799 nm range are presented. The Principal Component Analysis results confirm the potential of this technique in qualitative analysis of urinary stones before their surgical removal.

Keywords: urinary stones; near infrared spectroscopy; urology
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