School of Veterinary Medicine, University College Dublin, Dublin, Ireland.
Vet Radiol Ultrasound. 2024 Jan;65(1):4-9. doi: 10.1111/vru.13314. Epub 2023 Nov 27.
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.
计算机断层扫描（CT）是小动物兽医中常用的一种方式。据报道，在进行胸部 CT 检查的小动物中，经常会发现气泡。本回顾性观察研究的目的是记录犬猫常规胸部 CT 检查中血管内和血管外气体的发生和流行情况。排除任何与软组织气体相关疾病的临床体征的患者。共纳入 84 项犬研究和 90 项猫研究，发现所有研究中有 66.7%存在气体，犬研究中气体更易被发现（75.0%），而猫病例中则较少见（58.9%）（P=0.009）。犬研究中，与对比前研究相比，对比后研究中更易检测到气体（P=0.016）。所有纳入研究中均有 65.5%（75%的犬，56.7%的猫）存在血管内气体。所有研究中有 13.8%（犬 14.3%，猫 13.3%）存在血管外气体，其中 8.62%的研究中检测到椎管内气体（犬 11.9%，猫 5.56%），5.75%的研究中检测到筋膜平面内气体（犬 2.38%，猫 8.89%）。总之，在大多数犬和猫的胸部 CT 研究中，即使没有病理病因的临床证据，也可以发现气泡。
