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Predicting the composition of gallstones by infrared spectroscopy.
Artículo en Inglés | IMSEAR | ID: sea-124974
ABSTRACT

AIM:

To determine the composition of gallstones in South India by comparing visual assessment with graphic interpretation of infrared spectra.

METHODS:

Infrared spectroscopy (IRS) was used in qualitative analysis of 168 gallstones from Tamilnadu, Kerala and Karnataka and compared with visual interpretation. The spectrum of cholesterol, calcium bilirubinate and calcium carbonate for each stone was correlated with visual inspection.

RESULTS:

Fifty four percent of gallstones were of pigment variety, 43% were of mixed and the remaining 3% were cholesterol gallstones as categorised by visual interpretation. Based on infrared spectrocopic interpretation the percentages were 58%, 39% and 2% respectively. There was a good agreement between the visual inspection and IRS in classification of gallstones (Kappa value 85%; 95% CI 77-93%).

CONCLUSION:

Visual inspection of gallstones can predict the composition of gallstone with good accuracy and was comparable to infrared spectroscopic interpretation.
Asunto(s)
Texto completo: Disponible Índice: IMSEAR (Asia Sudoriental) Asunto principal: Examen Físico / Espectrofotometría Infrarroja / Bilirrubina / Humanos / Colelitiasis / Intervalos de Confianza / Calcio / Colesterol / Valor Predictivo de las Pruebas / Sensibilidad y Especificidad Tipo de estudio: Estudio diagnóstico / Estudio pronóstico / Investigación cualitativa País/Región como asunto: Asia Idioma: Inglés Año: 2001 Tipo del documento: Artículo

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Texto completo: Disponible Índice: IMSEAR (Asia Sudoriental) Asunto principal: Examen Físico / Espectrofotometría Infrarroja / Bilirrubina / Humanos / Colelitiasis / Intervalos de Confianza / Calcio / Colesterol / Valor Predictivo de las Pruebas / Sensibilidad y Especificidad Tipo de estudio: Estudio diagnóstico / Estudio pronóstico / Investigación cualitativa País/Región como asunto: Asia Idioma: Inglés Año: 2001 Tipo del documento: Artículo