Anterior Inferior Cerebellar Artery

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Revision as of 23:14, 4 March 2024 by Fmichael1 (talk | contribs) (Created page with "The Anterior Inferior Cerebellar Arteries (AICAs) typically arise from the lower half of the basilar artery (BA), most commonly from a single trunk. The AICA is divided into four segments: the anterior pontine (a1), the lateral pontine (a2), the flocculopeduncular (a3), and the cortical (a4) segments. * The A1 segment extends from its origin to the midpoint of the inferior olive. * The A2 segment extends from the inferior olive to the flocculus and includes several branc...")
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The Anterior Inferior Cerebellar Arteries (AICAs) typically arise from the lower half of the basilar artery (BA), most commonly from a single trunk. The AICA is divided into four segments: the anterior pontine (a1), the lateral pontine (a2), the flocculopeduncular (a3), and the cortical (a4) segments.

  • The A1 segment extends from its origin to the midpoint of the inferior olive.
  • The A2 segment extends from the inferior olive to the flocculus and includes several branches: the labyrinthine, the subarcuate, the cerebellosubarcuate, and recurrent perforating arteries.
  • The A3 segment extends from the flocculus to the cerebellopontine fissure.
  • The A4 segment is the portion of the vessel distal to the cerebellopontine fissure.
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