Arteria cerebelli anterior inferior

Anterior inferior cerebellar artery • Basilar artery branches (illustration) - Ganzer Fall bei Radiopaedia

Gaillard, F. Basilar artery branches (illustration). Case study, Radiopaedia.org. (accessed on 27 Oct 2022) https://doi.org/10.53347/rID-36153 • CC by-nc-sa 3.0 (modified)

Schleife der "anterior inferior cerebellar artery" (AICA) bis in den inneren Gehörgang. Ein Zusammenhang zu einer vestibulären Symptomatik erscheint dennoch sehr fraglich.

Schleife der

"anterior inferior cerebellar artery" (AICA) bis in den inneren Gehörgang. Ein Zusammenhang zu einer vestibulären Symptomatik erscheint dennoch sehr fraglich.

Wikipedia • CC BY-SA 3.0

Schleife der "anterior inferior cerebellar artery" (AICA) bis in den inneren Gehörgang. Ein Zusammenhang zu einer vestibulären Symptomatik erscheint dennoch sehr fraglich.

Schleife der

"anterior inferior cerebellar artery" (AICA) bis in den inneren Gehörgang. Ein Zusammenhang zu einer vestibulären Symptomatik erscheint dennoch sehr fraglich.

Wikipedia • CC BY-SA 3.0

Anterior inferior cerebellar artery • Cerebellar arteries (annotated image) - Ganzer Fall bei Radiopaedia

Gaillard, F. Cerebellar arteries (annotated image). Case study, Radiopaedia.org. (accessed on 27 Oct 2022) https://doi.org/10.53347/rID-36152 • CC by-nc-sa 3.0 (modified)

Anterior inferior cerebellar artery • Posterior fossa vascular territories (illustration) - Ganzer Fall bei Radiopaedia

Gaillard, F. Posterior fossa vascular territories (illustration). Case study, Radiopaedia.org. (accessed on 27 Oct 2022) https://doi.org/10.53347/rID-36095 • CC by-nc-sa 3.0 (modified)

Anterior inferior cerebellar artery • Brainstem arterial territories (diagrams) - Ganzer Fall bei Radiopaedia

Hacking, C. Brainstem arterial territories (diagrams). Case study, Radiopaedia.org. (accessed on 27 Oct 2022) https://doi.org/10.53347/rID-81960 • CC by-nc-sa 3.0 (modified)

Anterior cerebral artery • Common variants of the circle of Willis (illustrations) - Ganzer Fall bei Radiopaedia

Hapugoda, S. Common variants of the circle of Willis (illustrations). Case study, Radiopaedia.org. (accessed on 21 Oct 2022) https://doi.org/10.53347/rID-51777 • CC by-nc-sa 3.0 (modified)

Radiopaedia • CC-by-nc-sa 3.0 • de

siehe auch

Meningeom
Cerebellum
Arteria basilaris
Vestibularisschwannom
Arteria cerebelli inferior posterior (PICA)
IAM
neurovaskuläres Kompressionssyndrom Kleinhirnbrückenwinkel
CP angle

The anterior inferior cerebellar artery (AICA) is one of three vessels that provides arterial blood supply to the cerebellum. It has a variable origin, course and supply, with up to 40% of specimens not having an identifiable standard AICA. The amount of tissue supplied by the AICA is variable (AICA-PICA dominance) but usually includes:

middle cerebellar peduncle
inferolateral portion of the pons
flocculus
anteroinferior surface of the cerebellum
cranial nerves VII and VIII

Origin

99% of AICAs arise from the basilar artery, but where along the vessel is variable:

75% lower third
16% middle third
9% vertebrobasilar junction

Branches

internal auditory branch (80% single, 20% double) passes into the IAM
lateral branch passes around the flocculus and into the hemispheric fissure (supplying both superior and inferior semilunar lobules)
medial branch supplies the biventral lobule

Before cross-sectional imaging, the AICA (along with venous displacement) was used to identify posterior fossa intra- or extra-axial masses, especially at the CP angle. Extra-axial masses (e.g. vestibular schwannomas or meningiomas) would displace the vessel whereas intra-axial masses tend not to.