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J Vet Sci 2018; 19(1): 145-150  https://doi.org/10.4142/jvs.2018.19.1.145
Variation of canine vertebral bone architecture in computed tomography
Byunggyu Cheon, Seungjo Park, Sang-kwon Lee, Jun-Gyu Park, Kyoung-Oh Cho, Jihye Choi*
College of Veterinary Medicine, Chonnam National University, Gwangju 61186, Korea
Correspondence to: Jihye Choi
Tel: +82-62-530-2821; Fax: +82-62-530-2897; E-mail: imsono@chonnam.ac.kr
Received: February 3, 2017; Revised: May 13, 2017; Accepted: June 21, 2017; Published online: January 31, 2018.
Focal vertebral bone density changes were assessed in vertebral computed tomography (CT) images obtained from clinically healthy dogs without diseases that affect bone density. The number, location, and density of lesions were determined. A total of 429 vertebral CT images from 20 dogs were reviewed, and 99 focal vertebral changes were identified in 14 dogs. Focal vertebral bone density changes were mainly found in thoracic vertebrae (29.6%) as hyperattenuating (86.9%) lesions. All focal vertebral changes were observed at the vertebral body, except for a single hyperattenuating change in one thoracic transverse process. Among the hyperattenuating changes, multifocal changes (53.5%) were more common than single changes (46.5%). Most of the hypoattenuating changes were single (92.3%). Eight dogs, 40% of the 20 dogs in the study and 61.6% of the 13 dogs showing focal vertebral changes in the thoracic vertebra, had hyperattenuating changes at the 7th or 8th thoracic vertebra. Our results indicate that focal changes in vertebral bone density are commonly identified on vertebral CT images in healthy dogs, and these changes should be taken into consideration on interpretation of CT images.
Keywords: bone density, canine, computed tomography, spine

© 2018 The Korean Society of Veterinary Science.

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.