Inter-breed and individual variations in thoracic conformation often resulted in incorrect diagnosis during interpretation of canine thoracic radiographs. Therefore, it may be helpful to build a collection of normal thoracic radiographs of different breeds for useful reference. The aim of this study is to establish a normal canine thoracic radiograph database according to breed, age, and body weight. Medical records and thoracic radiographs of Veterinary Medical Center, Chungbuk National University were reviewed retrospectively. Normal thoracic radiographs of 170 dogs out of 640 patients who had thoracic radiographs were obtained. In 170 normal dogs, Maltese, Shih-tzu, Yorkshire Terriers, and Miniature Poodle were the most prevalent breeds, with 90 dogs. In this study, the normal canine thoracic radiograph database was established in the four breeds; it can be used as normal references for interpretation of canine thoracic radiographs.

• Dongwoo Chang(Veterinary Medical Center, College of Veterinary Medicine, Chungbuk National University) Corresponding author
• Jinhwa Chang(Veterinary Medical Center, College of Veterinary Medicine, Chungbuk National University)
• Wooshin Choi(Veterinary Medical Center, College of Veterinary Medicine, Chungbuk National University)
• Jinyoung Song(Veterinary Medical Center, College of Veterinary Medicine, Chungbuk National University)
• Youngjae Lee(Veterinary Medical Center, College of Veterinary Medicine, Chungbuk National University)
• Donghoon Lee(Veterinary Medical Center, College of Veterinary Medicine, Chungbuk National University)
• Juhyung Kim(Veterinary Medical Center, College of Veterinary Medicine, Chungbuk National University)