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Anterior cerebral veins

The anterior cerebral veins are a pair of important cerebral veins that drain blood from the medial and superior surfaces of the frontal lobes. These veins play a vital role in cerebral venous drainage by transporting deoxygenated blood from the cortex and subcortical structures towards the venous sinuses, especially the superior sagittal sinus. Proper identification and understanding of their normal anatomy and imaging features are essential for diagnosing vascular pathologies and planning neurosurgical interventions.

Synonyms

  • Veins of the frontal lobe (medial aspect)

Function

  • Drain venous blood from the medial and superior parts of the frontal lobes

  • Transport blood towards the superior sagittal sinus

  • Assist in maintaining normal intracranial pressure and cerebral circulation

  • May serve as collateral drainage pathways in cases of venous obstruction

MRI Appearance

  • T2-weighted Imaging

    • Appear as flow voids (dark signal) due to rapid blood flow

    • Well-defined linear or curvilinear hypointense structures along the medial frontal region

  • T1-weighted Imaging

    • Also appear as flow voids (hypointense lines or dots)

    • Normally not directly visualized unless thrombosed (then hyperintense due to clot)

  • Phase Contrast 3D (PC 3D) MR Venography

    • High sensitivity for visualizing venous structures

    • Anterior cerebral veins appear as thin, continuous tubular structures

    • Clear depiction of vein course and connections to the superior sagittal sinus

  • Post-contrast T1-weighted Imaging

    • Veins become hyperintense (bright) after gadolinium administration due to enhancement of blood pool

    • More conspicuous than pre-contrast images

    • Useful for detecting filling defects (e.g., thrombosis) or abnormal enhancement

CT Appearance

  • Non-contrast CT

    • Not usually visible unless calcified or thrombosed

    • May appear as linear or curvilinear hypoattenuating structures if dilated

  • CT Venography (CTV)

    • Veins are enhanced with intravenous contrast

    • Visible as thin, enhancing linear structures along the medial frontal lobes

    • Filling defects may suggest thrombosis or compression

MRI images

Anterior cerebral veins MRI 3T axial image

MRI images

Anterior cerebral veins mri 3t sagittal image