Quantitative analysis of gallstones using laser-induced breakdown spectroscopy.
Appl Opt
; 47(31): G38-47, 2008 Nov 01.
Article
en En
| MEDLINE
| ID: mdl-19122701
The utility of laser-induced breakdown spectroscopy (LIBS) for categorizing different types of gallbladder stone has been demonstrated by analyzing their major and minor constituents. LIBS spectra of three types of gallstone have been recorded in the 200-900 nm spectral region. Calcium is found to be the major element in all types of gallbladder stone. The spectrophotometric method has been used to classify the stones. A calibration-free LIBS method has been used for the quantitative analysis of metal elements, and the results have been compared with those obtained from inductively coupled plasma atomic emission spectroscopy (ICP-AES) measurements. The single-shot LIBS spectra from different points on the cross section (in steps of 0.5 mm from one end to the other) of gallstones have also been recorded to study the variation of constituents from the center to the surface. The presence of different metal elements and their possible role in gallstone formation is discussed.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Análisis Espectral
/
Rayos Láser
Límite:
Adult
/
Humans
/
Male
/
Middle aged
Idioma:
En
Revista:
Appl Opt
Año:
2008
Tipo del documento:
Article
País de afiliación:
India
Pais de publicación:
Estados Unidos