Topics

Topic

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Frontal pole

The frontal pole represents the most anterior (front-most) part of the frontal lobe in the human brain. It is involved in higher cognitive functions, including decision-making, planning, and social behavior. Due to its strategic location, the frontal pole acts as a critical hub for integrating executive functions and emotional processing. This region is of great interest in both clinical neurology and neuroimaging due to its role in neuropsychiatric disorders and frontal lobe syndromes.

Synonyms

  • Frontopolar cortex

  • Anterior frontal lobe

  • Brodmann area 10

  • Polus frontalis (Latin)

Arterial Supply

  • Primarily supplied by the anterior cerebral artery (ACA), especially its terminal (pericallosal) branches

  • Minor contributions from the middle cerebral artery (MCA), especially the most anterior cortical branches

Venous Drainage

  • Drains mainly into the superior sagittal sinus via superficial cortical veins

  • Some drainage to the inferior sagittal sinus and vein of Trolard (superior anastomotic vein)

Function

  • Executive function (planning, reasoning, problem-solving)

  • Social cognition and behavior regulation

  • Working memory and attention control

  • Emotional regulation and response to novelty

  • Abstract thinking and prospective memory (remembering to perform actions in the future)

MRI Appearance

  • T1-Weighted Images:

    • Grey matter appears intermediate (grey) in signal intensity

    • White matter is slightly hyperintense relative to grey matter

    • No unique signal characteristics; well-delineated cortical ribbon

  • T2-Weighted Images:

    • Grey matter is hyperintense compared to white matter

    • Good for delineating cortical thickness and identifying edema or lesions

    • Lesions (if present) appear hyperintense

  • FLAIR Images:

    • Grey matter is isointense to slightly hyperintense

    • White matter appears hypointense

    • Pathology (e.g., demyelination, infarcts) is accentuated, as CSF suppression increases lesion contrast

CT Appearance

  • Grey matter of the frontal pole is slightly denser (hyperdense) compared to white matter

  • Appears as the most anterior cortical region on axial and coronal brain CT

  • No distinct features unless affected by pathology (e.g., hypodensity in infarct, hyperdensity with hemorrhage)

MRI images

Frontal pole mri 3t sagittal image

CT image

Frontal pole CT sagittal anatomy image -img-00001-00001