Cerebellar Arterial Territories
- * Three arteries supply the cerebellum:
The Cerebellum
Brain Atlas: Cerebellum
- The cerebellar vascular territories are supplied by the:
PICA (Inferior Cerebellum)
- Supplies the entire inferior cerebellum, which lies at the level of the medulla.
- It divides into lateral and medial branches, which supply the lateral and medial regions of the inferior cerebellum, respectively.
SCA (Superior Cerebellum)
- Supplies the superior cerebellum, which lies at the level of the midbrain.
- It divides into lateral and medial branches (similar to the PICA), which supply the lateral and medial superior cerebellum, respectively.
AICA, SCA, & PICA (Middle Cerebellum)
The middle cerebellum (at the level of the pons) is supplied by all three cerebellar arteries
- AICA supplies the anterior, middle cerebellum.
- PICA supplies the posterior, middle cerebellum, inferiorly.
- SCA supplies the posterior, middle cerebellum, superiorly.
- Note that the AICA supplies a large portion of the middle cerebellar peduncle, and also note that it commonly gives off the internal auditory artery, which supplies the inner ear, thus in the appropriate clinical context, sudden hearing loss can be an important harbinger of basilar occlusion.