Precisão da técnica de absorciometria de raios-x de dupla energia na determinação da composição corporal em gatos
Carregando...
Data
2008
Título da Revista
ISSN da Revista
Título de Volume
Editor
Resumo
A short-term precision error of the individual subject and the DEXA technique, such as the effect of the
repositioning of the cat on the examination table, were established. Four neutered adult cats
(BW=4342g) and three females (BW=3459g) were submitted to five repeated scans with and without
repositioning between them. Precision was estimated from the mean of the five measurements and
expressed by the individual coefficient of variation (CV). The precision error of the technique was
estimated by the variance of scan pool (n=35) and expressed in CV for the technique (CVt). The degrees
of freedom and confidence intervals were determined to avoid underestimation of precision errors. Bone
mineral content (BMC), lean mass (LM), and fat mass (FM) averages were higher (P<0.05) when
animals were repositioned. The CVt was significantly higher (P<0.05) for bone mineral density (BMD),
LM, and FM when the animals were repositioned. For short-term precision measurements, the
repositioning of the animal was important to establish the precision of the technique. The dual energy xray
absorptiometry method provided precision for body composition measurements in adult cats.
Descrição
Palavras-chave
Cat, Repeatability, DEXA
Citação
BORGES, N. C.; VASCONCELLOS, R. S.; CANOLA, J. C.; PAULA, F. J. A.; CARCIOFI, A. C.; PEREIRA, G. T. Precisão da técnica de absorciometria de raios-x de dupla energia na determinação da composição corporal em gatos. Arquivo Brasileiro de Medicina Veterinária e Zootecnia, Belo Horizonte, v. 60, n. 1, p. 263-266, 2008.