Lafortune M, Trinh B C, Burns P N, Breton G, Burke M, Déry R, Gianfelice D, Philie M, Côté J
Department of Radiology, Hôpital Saint-Luc, Montreal, Que., Canada.
Radiology. 1991 Sep;180(3):667-70. doi: 10.1148/radiology.180.3.1871276.
Three patients with portal venous gas (one with radiographic and computed tomographic findings) had similar sonographic and Doppler patterns in the portal vein (PV). These patterns consisted of hyperechogenic foci moving within the lumen of the PV, producing sharp bidirectional spikes superimposed on the usual Doppler tracing of the PV. An injection of 0.25-0.50 cm3 of air, oxygen, nitrogen, and carbon dioxide into the jejunal vein of nine dogs yielded identical portal venous sonographic and Doppler patterns. In addition, the liver parenchyma of the dogs became hyperechogenic after the injection of gas. Gas in the PV is accompanied by the following signs: echogenic, moving foci within the lumen of the PV; sharp spikes on Doppler spectral display; and hyperechogenic foci within the liver parenchyma.
三名患有门静脉气体的患者（其中一名有放射学和计算机断层扫描结果）在门静脉（PV）中具有相似的超声和多普勒模式。这些模式包括在PV管腔内移动的高回声灶，在PV通常的多普勒描记图上产生尖锐的双向尖峰。向9只狗的空肠静脉内注入0.25 - 0.50 cm³的空气、氧气、氮气和二氧化碳，产生了相同的门静脉超声和多普勒模式。此外，注入气体后，狗的肝实质变得高回声。PV内的气体伴有以下征象：PV管腔内有回声、移动的病灶；多普勒频谱显示上有尖锐的尖峰；肝实质内有高回声灶。
