Abstract

Aim: The aim of the study was to evaluate radiographic liver area to 11^th thoracic vertebral area ratio for setting up a quantitative index in clinically healthy dogs.

Materials and Methods: Total 75 dogs were examined through computed radiography. One year and above aged dogs of 9 breed of different body weights were included in the study. A complete computed radiography was done to obtain right lateral (RL) and ventro-dorsal (VD) views in all dogs. The ratio was evaluated according to signalment characteristics i.e. age, sex, body weight, breed and neutering status.

Results: The ratio of radiographic liver area in lateral view(RLA-L) to T11 vertebral area(T11 A) was recorded as 27.62±0.74, 27.45±1.11, 27.97±1.17and 30.71±2.80 in 1-3 year, 3-6 year, 6-9 year and 9-12 year of age group, respectively. Sex wise ratio 26.83±0.85 in male and 28.73±0.76 in female group was measured. Body weight wise ratio was 27.44±1.26, 28.17±0.76 and 28.35± 1.02 in upto-20 Kg, 20-30 Kg and 30-40 Kg of body weight group, respectively. Breed wise ratio was 27.21±0.99, 28.78±1.65, 29.74±1.97, 27.44±0.95, 28.88±1.30, 28.55±2.21, 24.82±1.67, 28.59±2.38 and 30.79±3.75 in German Shepherd, Belgian Shepherd, Siberian Husky, Dobermann pinscher, Golden Retriever, Labrador Retriever, Indian Mongrel, Pomeranian and Pug, respectively. Neutering status wise ratio was 28.37±0.88 and 27.74±0.75 in castrated or spayed and intact group, respectively.

Conclusion: It was concluded that the ratio of radiographic liver lateral area to T11 vertebral area is set as a quantitative index of radiographic liver size in dogs. The lateral surface area of normal liver is 27.97 times to the lateral surface of T11 vertebrae.

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