Infrared and Raman studies on renal stones: the use of second derivative infrared spectra.
Summary of "Infrared and Raman studies on renal stones: the use of second derivative infrared spectra."
Urolithiasis is a very frequent illness found in Argentina; however, stone analysis is not routinely performed. In this work, 86 renal calculi (from cities of Luján and San Antonio de Areco, State of Buenos Aires, Argentina) have been analyzed by infrared and Raman spectroscopies, and the results correlated with the main possible pathological conditions. Calcium oxalate monohydrate (whewellite) and mixtures of calcium oxalate monohydrate and carbonate apatite were the most frequent compounds found in our samples. In order to improve the identification of different phases present in calculi [particularly whewellite and weddellite (calcium oxalate dihydrate)], the second derivative spectra were used. The FTIR spectroscopy together with the second derivative analysis provides the urologist with a good method for calculi component determinations.
Departamento de Ciencias Básicas, Universidad Nacional de Luján, Rutas 5 y 7, Luján, Argentina, firstname.lastname@example.org.
This article was published in the following journal.
Name: Urological research
- PubMed Source: http://www.ncbi.nlm.nih.gov/pubmed/20686758
- DOI: http://dx.doi.org/10.1007/s00240-010-0305-2
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Medical and Biotech [MESH] Definitions
Measurement of the regional temperature of the body or an organ by infrared sensing devices, based on self-emanating infrared radiation.
That portion of the electromagnetic spectrum usually sensed as heat. Infrared wavelengths are longer than those of visible light, extending into the microwave frequencies. They are used therapeutically as heat, and also to warm food in restaurants.
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Stones in the URETER that are formed in the KIDNEY. They are rarely more than 5 mm in diameter for larger renal stones cannot enter ureters. They are often lodged at the ureteral narrowing and can cause excruciating renal colic.