Jenna Feyler, Etienne Côté, Chick Weisse, Sue Dawson
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Abstract
Objective: To further understand spatial relationships of common carotid arteries to adjacent structures through evaluation of computed tomographic angiograms in dogs.
Animals: 24 pet dogs.
Procedure: A database was searched for triplanar computed tomographic angiograms that included the heart base caudally and the 5th cervical vertebra cranially, without macroscopic abnormalities. Measurements included brachiocephalic trunk length, common carotid arteries' position relative to the trachea, transverse (axial) thoracic height and width, manubrium length, and length of the 7th cervical vertebra (C7).
Results: Measurements (mean + SD) included brachiocephalic trunk length = 3.65 ± 1.34 cm (n = 24), mean thoracic inlet height = 6.51 ± 2.03 cm (n = 23), mean thoracic inlet width = 4.69 ± 1.35 cm (n = 20), mean manubrium length = 3.52 ± 1.15 cm (n = 22), and mean length of C7 = 1.93 ± 0.46 cm (n = 23).
Conclusion: Some or all measurements were feasible in all dogs. Understanding interindividual variation in spatial relationships is pertinent to differentiating normal from abnormal, for surgical planning, and possibly for elucidating the pathogenesis of certain disorders.
Clinical relevance: It is possible to obtain these measurements in dogs. This technique could be applied to subgroups of dogs (e.g., breeds) and dogs with cervical or thoracic abnormalities.
期刊介绍：
The Canadian Veterinary Journal (CVJ) provides a forum for the discussion of all matters relevant to the veterinary profession. The mission of the Journal is to educate by informing readers of progress in clinical veterinary medicine, clinical veterinary research, and related fields of endeavor. The key objective of The CVJ is to promote the art and science of veterinary medicine and the betterment of animal health.
A report suggesting that animals have been unnecessarily subjected to adverse, stressful, or harsh conditions or treatments will not be processed for publication. Experimental studies using animals will only be considered for publication if the studies have been approved by an institutional animal care committee, or equivalent, and the guidelines of the Canadian Council on Animal Care, or equivalent, have been followed by the author(s).
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