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Supraorbital vein

The supraorbital vein is a superficial vein of the face and scalp that plays a key role in the venous drainage of the forehead and upper eyelid. It runs superior to the orbit, traveling with the supraorbital artery and nerve, and drains blood from the forehead and scalp region into the angular vein or directly into the ophthalmic vein. Due to its superficial position, it can often be visualized or palpated, especially in thin individuals. Understanding the course, function, and imaging features of the supraorbital vein is crucial for radiologists, surgeons, and clinicians working in head and neck anatomy.

Synonyms

  • Frontal vein (in some contexts)

  • Vein of the forehead (non-technical)

  • Vena supraorbitalis (Latin)

Function

  • Drains venous blood from the forehead, scalp, and upper eyelid.

  • Communicates with the angular vein, ophthalmic vein, and superficial temporal vein.

  • Plays a role in facial venous return and thermoregulation of the scalp.

  • Provides a potential collateral pathway in cases of venous obstruction.

MRI Appearance

  • T1-Weighted Imaging:

    • Appears as a tubular or serpentine structure with low signal intensity (dark) due to flowing blood.

    • Enhanced visualization after gadolinium contrast (if used).

  • T2-Weighted Imaging:

    • Also low signal intensity (dark) because of rapid blood flow.

    • Sometimes seen as a flow void within the surrounding soft tissue.

  • STIR (Short Tau Inversion Recovery):

    • The vein maintains low signal intensity.

    • Perivenous edema (if present) would appear bright, but the vessel itself remains dark.

    • Useful in detecting inflammation or pathology around the vessel.

CT Appearance

  • Non-Contrast CT:

    • Supraorbital vein may be difficult to distinguish without contrast.

    • Occasionally seen as a faint linear or tubular density above the orbit.

  • Contrast-Enhanced CT (CT Angiography):

    • Clearly delineates the supraorbital vein as a contrast-filled vessel.

    • Appears as a well-defined enhancing tubular structure coursing superior to the orbital rim.

MRI images

Supraorbital vein mri image