2024年4月25日 · Immediately before reaching the liver, the portal vein divides in the porta hepatis into left and right portal veins. The right portal vein divides into anterior (supplying segments 5 and 8) and posterior (supplying segments 6 and 7) branches. The left portal vein may be divided into transverse and umbilical portions, as delineated by the ...

2021年10月1日 · When the portal vein enters the liver it bifurcates into right and left main branches. The right portal vein bifurcates into an anterior and posterior branch which feed segments 5, 6, 7 and 8 respectively, whereas the left branch feeds segments 2, 3 and 4.

(a) B-mode sonogram shows echogenic material within the right and main portal veins (yellow arrow) associated with expanded lumen and loss of wall definition (red arrow). (b) Colour Doppler shows absent PV flow, corresponding to occlusive PV thrombus.

In the hilum of the liver, it divides into right and left branches. On an intercostal color Doppler scan, the normal portal vein appears red-orange (hepatopetal flow) and the hepatic artery is yellow (indicating higher flow velocity).

2016年12月20日 · The main portal vein divides into the left portal vein, which supplies blood to the left lobe of the liver and the right portal vein, which supplies the right lobe of the liver . Portal veins characteristically run in triads with the hepatic arteries and bile ducts and branch away from the porta hepatis.

Figure 2-6 Branches of the portal vein. A transverse image showing the right branch of the portal vein (RT) dividing into anterior (A) and posterior (P) segments.The left branch (LT) divides into medial (M) and lateral (L) segments.The inferior vena cava (I) is seen posteriorly. Note the echogenic borders of the portal vein. 65583_CH02_5378.qxd ...

the right portal vein branch first runs laterally and then bifurcates into a su-perior and inferior branch. Position the probe transversely over the portal vein (Fig. 4.100a, b) and slide it cephalad in small increments. Observe how the right portal vein branch passes into the right lobe of …

2023年8月8日 · The portal vein branches as it enters the liver into the right and left portal veins and then further divides. The progressively smaller branches that come from the venous divisions form the portal venules. After the blood mixes within the sinusoids, it is collected within the terminal hepatic venule or central vein. ...

Coronal (left) and axial (right) diagrams show that the main portal vein (1) divides into the right (2) and left portal veins. The left portal vein first courses horizontally...

These three structures course together throughout the liver and are known as the portal triad. The portal vein divides at the porta hepatis into right and left branches. The right portal vein divides into anterior and posterior branches, and the left portal …