Burgener F A, Gutierrez O H
Invest Radiol. 1985 Jul;20(4):403-6. doi: 10.1097/00004424-198507000-00012.
Portal blood iodine concentrations and the radiographic visualization of the portal vein were compared in five dogs (50 portograms). The portal blood iodine concentrations required for a certain degree of portal vein opacification varied considerably. However, an overall significant difference was found in the portal blood iodine concentrations of different degrees of portal vein visualization. An increase in the portal blood iodine concentrations from 0 to 30 mg per ml was associated with an overall improvement of the portal vein visualization. With a blood iodine concentration of 30 mg per ml, an excellent visualization of the portal system was always achieved that could no longer be improved by further increasing the portal blood iodine concentration up to 50 mg per ml. For a reliable diagnostic visualization of portal vein contributaries and branches, a blood iodine concentration of 30 mg per ml appears required; whereas for the visualization of the larger portal vein, 15 mg per ml appears sufficient.
对五只犬（50次门静脉造影）的门静脉血碘浓度和门静脉的影像学显影进行了比较。达到一定程度门静脉显影所需的门静脉血碘浓度差异很大。然而，不同程度门静脉显影的门静脉血碘浓度存在总体显著差异。门静脉血碘浓度从0增加到每毫升30毫克与门静脉显影的总体改善相关。当血碘浓度为每毫升30毫克时，总能实现门静脉系统的良好显影，进一步将门静脉血碘浓度提高到每毫升50毫克也无法再改善。对于可靠诊断门静脉分支和属支的显影，似乎需要每毫升30毫克的血碘浓度；而对于较大门静脉的显影，每毫升15毫克似乎就足够了。
