Avaliou-se 31 cães saudáveis, sem raça definida, sendo 10 machos e 21 fêmeas, com 8 meses a 7 anos de idade e peso de1,5-28 kg. Inicialmente foram mensurados os diâmetros fronto-occiptal (DFO) e bizigomático (DBZ) do crânio com o auxílio de um paquímetro. A ultra-sonografia transpalpebral em modo-B foi realizada para mensurar as estruturas do bulbo ocular, conforme se segue: D1- espessura da córnea; D2- distância entre o ponto central da imagem da córnea e a da cápsula anterior do cristalino (câmara anterior); D3- distância entre o ponto central da imagem da córnea e a da cápsula posterior do cristalino; D4- espessura do cristalino, que corresponde a distância entre a imagem da cápsula anterior e a cápsula posterior do cristalino; D5- diâmetro do cristalino, distância entre as imagens dos pólos do cristalino; D6- área do cristalino; D7- câmara vítrea, distância entre a imagem da cápsula posterior do cristalino e a retina; D8- distância entre a cápsula anterior do cristalino e a retina; D9- distância entre a imagem da córnea e a retina. Com exceção da D4, houve efeito dos DFO e DBZ sobre as medidas das estruturas internas do BO. A análise de regressão linear entre as medidas das estruturas do bulbo ocular e os DFO e DBZ foram significativas para D1, D2, D3, D4, D5, D6, D7, D8 e D9.

ABSTRACT.-Santana E. Jr M., Beserra P.S., Brito A.B., Miranda S. The aim of this paper was to establish the relation between the kidney ecobiometry with atlanto-coccyges distance (ACD) and height (H) in adult healthy dogs, to obtain normality parameters for assessment of renal size and volume, as well as establish reference values to evaluate kidney blood perfusion by the resistivity index (RI) and pulsatility index (PI) of main renal artery. The study was applied at 22 adult dogs, 11 males and 11 females. Previously, the DAC and H of all animals were measured. For ultrasonographic examination, the ultra-sound system HDI 4000 PHILIPS equipped with a multi-frequency microconvex transducer, Color Doppler and Spectral Doppler devices was used. The animals were placed into right or left lateral decubitus position, in agreement with the kidney to be assessed. The longitudinal (LD) and dorsoventral diameters (DVD) of kidney were measured in longitudinal plane, and the transverse diameter (TD) was determined in transversal section. The renal volume (V) was automatically calculated by the ultrasound software. With Triplex Doppler, the RI and PI of right and left main renal arteries were obtained. All data were represented in mean ± SEM. Linear regression analyses were performed with renal LD, DVD, TD and V as dependent variable, and ACD and H as independent variable. RI and PI were compared between right and left renal arteries with Student's t-test. The LD, DVD, TD (cm) and V (ml) mean measurements for the left and right kidneys were: 5.24±0.27, 3.07±0.15, 3.07±0.9, 28.01±3.4 and 4.50±0.19, 2.88±0.14, 2.71±0.15, 21.27±2.6. All regression analyses were significant for the intercept and regression coefficient (P<0.01). There were statistical differences on RI and PI means between right and left renal arteries (P=0.001). The RI and PI means of left and right renal artery obtained were: 0.62±0.08 and 1.34±0.18; 0.70±0.06 and 1.62±0.13. The data obtained in the present paper can be used as parameters for evaluation of the renal size, volume and perfusion in adult dogs.INDEX TERMS: Corporal conformation, ultrasound, renal perfusion, Dopplerfluxometry.