Budd-Chiari syndrome is a disorder characterized by hepatic outflow occlusion which has a variety of causes [9, 32]. In planning treatment, it is important to determine the location and length of hepatic outflow obstruction , and 3D CE MR porto-venography is an accurate means of achieving this.
Heptatic outflow is also occluded in veno-oc-clusive disease. However, since it is the small intra-hepatic veins that are affected in this disease, imaging findings frequently reveal larger liver veins that may have decreased calibre but which are nevertheless still patent.
Further details about these diseases and imaging examples can be found in Chapter 9, "Imaging of Diffuse Liver Disease".
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