Abstract
Reproducible and easily applied measurements for radiologic evaluation are needed in the day-to-day clinical practice for diagnosis and treatment or management of thoracic disorders in the Nigerian Indigenous Dog. The objective of this prospective cross-sectional study was to document measurement indices used for the evaluation of canine thoracic silhouette. Thirty healthy Nigerian Indigenous Dogs, 10 puppies and 20 adults of average body weight 8.19±2.45 kg and comprising equal number of both sexes. Ninety survey dorsoventral, right lateral and left lateral thoracic radiographs of the animals were obtained. The shape of the thoracic silhouette in each radiograph was objectively evaluated and adequately described. In the right and left lateral views, sternovertebral distance and sagittal vertebral diameter of the tenth vertebra were measured and recorded; while the dimension measured in the dorsoventral view was costocostal distance. In the lateral radiographs, mean values of vertebral indices (VI) for right/left lateral radiographs were 0.10±0.00/0.10±0.00, respectively. Results of normal thoracic silhouette determined in dorsoventral versus right lateral orthogonal radiographs were: frontosagittal index (FSI) 1.06±0.05 and Haller index (HI) 0.95±0.04. The clinical relevance of this investigation is that it provides measurement indices for the morphological evaluation of the thoracic silhouette in the Nigerian Indigenous Dog. These indices are reproducible, objective and easy to apply in small animal clinical practice.
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