Abstract：
Computed tomography (CT) is a commonly used modality in small animal veterinary medicine. Anecdotally, gas bubbles are frequently identified in small animals undergoing thoracic CT examination. The aim of this retrospective observational study was to record the occurrence and prevalence of vascular and extravascular gas in routine thoracic CT examinations in dogs and cats. Patients with any clinical signs of diseases related to soft tissue gas were excluded. A total of 84 canine studies and 90 feline studies were included, detecting gas in 66.7% of all studies, with gas more likely to be detected in canine studies (75.0%) than in feline cases (58.9%) (P = 0.009). Canine studies were more likely to have gas detected in postcontrast studies than in precontrast studies (P = 0.016). Intravascular gas was detected in 65.5% of all included studies (75% canine and 56.7% feline). Extravascular gas was detected in 13.8% of all studies (14.3% canine, 13.3% feline), with gas detected in the vertebral canal of 8.62% of all studies (canine 11.9%, feline 5.56%) and within fascial planes in 5.75% of all studies (canine 2.38%, feline 8.89%). In conclusion, gas bubbles were identified in the majority of canine and feline thoracic CT studies without clinical evidence of a pathologic etiology.
摘要：
计算机断层扫描（CT）是小动物兽医学中常用的方式。有趣的是，在接受胸部CT检查的小动物中经常发现气泡。这项回顾性观察研究的目的是记录狗和猫的常规胸部CT检查中血管和血管外气体的发生和患病率。排除任何与软组织气体相关疾病的临床症状的患者。共纳入84项犬科研究和90项猫科动物研究,在所有研究的66.7%中检测气体，在犬科动物研究中(75.0%)比在猫科动物病例中(58.9%)更有可能检测到气体(P=0.009)。与对比前研究相比，对比后研究中更有可能检测到犬科动物的气体（P=0.016）。在所有纳入研究中，有65.5％（75％的犬科动物和56.7％的猫科动物）检测到血管内气体。在所有研究的13.8%中检测到血管外气体(14.3%的犬，13.3%猫科动物)，在所有研究的8.62%的椎管中检测到气体(犬11.9%，猫科动物5.56%)和筋膜平面内5.75%的所有研究(犬类2.38%，猫科动物8.89%）。总之,在大多数犬和猫的胸部CT研究中发现了气泡，但没有病理病因的临床证据。
