Hoey Seamus, Drees Randi, Hetzel Scott
Department of Surgical Sciences, University of Wisconsin, Madison, WI, USA.
Vet Radiol Ultrasound. 2013 Jan-Feb;54(1):25-30. doi: 10.1111/j.1740-8261.2012.01969.x. Epub 2012 Sep 18.
Abdominal computed tomography (CT) studies of 19 dogs with no history or clinical signs of gastrointestinal disease, and two dogs with a histological diagnosis of gastrointestinal neoplasia were examined retrospectively. Gastrointestinal segments were evaluated subjectively for conspicuity, contrast enhancement, and wall layering after contrast medium administration. In dogs without gastrointestinal disease, there were 62.8% of gastrointestinal segments (serosa to serosa) and 77.7% of gastrointestinal walls (serosa to mucosa) visualized. Wall layering on postcontrast images was seen in 21.8% of gastrointestinal segments. There was significant association between gastrointestinal diameter and wall thickness. There was significant association between weight and gastrointestinal wall thickness in the following regions: gastric fundus, gastric body, gastric pylorus, gastric pyloric antrum, duodenal cranial flexure, jejunum and ascending colon, and between patient weight and gastrointestinal diameter in cranial duodenal flexure, descending duodenum, transverse duodenum, ascending duodenum, and jejunum. Measurements acquired from CT studies correlated well with previously published normal reference ranges for radiographic and ultrasonographic studies. Gastrointestinal neoplasia, diagnosed in two dogs, had a gastrointestinal wall thickness greater than the range of the dogs without gastrointestinal disease. Computed tomography offers identification of the gastrointestinal tract segments in dogs, allows for evaluation of gastrointestinal diameter and aids in investigation of gastrointestinal wall thickness.
对19只无胃肠道疾病病史或临床症状的犬以及2只经组织学诊断为胃肠道肿瘤的犬的腹部计算机断层扫描（CT）研究进行了回顾性分析。在给予造影剂后，对胃肠道各段的清晰度、对比增强和壁层结构进行主观评估。在无胃肠道疾病的犬中，可见62.8%的胃肠道段（从浆膜到浆膜）和77.7%的胃肠道壁（从浆膜到黏膜）。造影后图像上可见21.8%的胃肠道段有壁层结构。胃肠道直径与壁厚度之间存在显著相关性。在以下区域，体重与胃肠道壁厚度之间存在显著相关性：胃底、胃体、胃幽门、胃幽门窦、十二指肠头曲、空肠和升结肠；在十二指肠头曲、降十二指肠、横十二指肠、升十二指肠和空肠，患者体重与胃肠道直径之间也存在显著相关性。CT研究获得的测量值与先前发表的放射学和超声研究的正常参考范围相关性良好。在2只犬中诊断出的胃肠道肿瘤，其胃肠道壁厚度大于无胃肠道疾病犬的范围。计算机断层扫描可识别犬的胃肠道段，评估胃肠道直径，并有助于研究胃肠道壁厚度。
