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Segment IV Artery
Cardiovascular System

Segment IV Artery

Arteria segmentum IV

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Quick Facts

Origin: Medial segmental artery of liver.

Course: Passes to the right as far as the umbilical fissure.

Branches: None.

Supplied Structures: Liver segment IV.

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The segment IV artery may be viewed as the distal continuation of the medial segmental artery of liver.

There is great confusion in the parameters of the segment IV artery of the liver. In many cases, it is synonymous with medial segmental artery. Segment IV artery is commonly observed to be a branch of the right hepatic artery (Jin et al., 2008; Favelier et al., 2015).


This intrahepatic branch passes to the right as far as the umbilical fissure.


There are no named branches.

Supplied Structures

The segment IV artery supplies segment IV of the liver, often called the quadrate lobe of the liver.


Favelier, S., Germain, T., Genson, P. Y., Cercueil, J. P., Denys, A., Krausé, D. and Guiu, B. (2015) 'Anatomy of liver arteries for interventional radiology', Diagn Interv Imaging, 96(6), pp. 537-46.

Jin, G. Y., Yu, H. C., Lim, H. S., Moon, J. I., Lee, J. H., Chung, J. W. and Cho, B. H. (2008) 'Anatomical variations of the origin of the segment 4 hepatic artery and their clinical implications', Liver Transpl, 14(8), pp. 1180-4.

Learn more about this topic from other Elsevier products


ScienceDirect image

When the artery is occluded blood is forced through the collateral vessels, drastically increasing fluid shear stress and triggering an inflammatory response which drives vessel remodeling.

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