By Claude L’Herminé M.D. (auth.)
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Extra resources for Radiology of Liver Circulation
Venous phase of S. : complete obstruction of the superior mesenteric vein ( ~ ) with a good hepatopetal collateral flow through the markedly dilated first jejunal vein. Splenic vein was normal on the venous phase of coeliac arteriography. 28a Fig. 28. Obstruction of the spleno-mesenterico-portal confluence by a pancreatic pseudo-cyst involving the pancreatic isthmus in a 43-year-old female (26-4--79). 5 cm). 50 28b 28b: Narrowing of the mesenterico-portal confluence ( t ) allowing, however, for a food filling of the portal vein.
However, they do not provide as reliable information about the hemodynamics of the portal flow, as they are not physiological methods. As a matter of fact, the contrast medium injection rate into the portal vein may probably give rise to transient hemodynamical changes. In addition, the portal flow rate and direction may not be the same in different areas of the portal system, so that the angiographic pattern is likely to depend on the precise site where the contrast medium is injected. On other hand, arterioportography is a more physiological method, allowing for a good visualization of the whole mesenterico portal axis which is the main afferent way to the liver from a functional point of view.
Accounting for a relatively good hepatopetal portal flow without hcpatofugal flow. 27 12a 12b Fig. 12. Portal vein obstruction in a 22-year-old female referred for variceal hemorrhage (9-10-75) and probably resulting from pylephlebitis during pregnancy 2 years earlier. 12a and b: Pronounced splenomegaly (20 em) with relatively thin intrasplenic arterial branches accounting for a slowed splenic blood flow rate as demonstrated by the prolonged splenography without opacification of the venous outflow.
Radiology of Liver Circulation by Claude L’Herminé M.D. (auth.)