Predicting the composition of gallstones by infrared spectroscopy.
Artigo
em Inglês
| 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.
Texto completo:
DisponíveL
Índice:
IMSEAR (Sudeste Asiático)
Assunto principal:
Exame Físico
/
Espectrofotometria Infravermelho
/
Bilirrubina
/
Humanos
/
Colelitíase
/
Intervalos de Confiança
/
Cálcio
/
Colesterol
/
Valor Preditivo dos Testes
/
Sensibilidade e Especificidade
Tipo de estudo:
Estudo diagnóstico
/
Estudo prognóstico
/
Pesquisa qualitativa
País/Região como assunto:
Ásia
Idioma:
Inglês
Ano de publicação:
2001
Tipo de documento:
Artigo
Similares
MEDLINE
...
LILACS
LIS