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The anatomical basis for the cerebellar infarcts
S Marinković1, M Kovacević, H Gibo
1Institute of Anatomy, University Medical School, Belgrade, Yugoslavia.
Surgical Neurology
|November 1, 1995
Summary
The posterior inferior cerebellar artery (PICA), anterior inferior cerebellar artery (AICA), and superior cerebellar artery (SCA) supply distinct cerebellar regions and are interconnected. Understanding these cerebellar artery territories is crucial for interpreting cerebellar infarcts.
Area of Science:
- Neuroanatomy
- Vascular Neurology
Background:
- Limited literature exists on cerebellar artery irrigation territories and anastomoses.
- Cerebellar artery anatomy may influence cerebellar infarct characteristics.
Purpose of the Study:
- To investigate the irrigation areas of the posterior inferior cerebellar artery (PICA), anterior inferior cerebellar artery (AICA), and superior cerebellar artery (SCA).
- To examine the anastomoses among these cerebellar arteries.
- To correlate anatomical findings with clinical presentation of cerebellar infarcts.
Main Methods:
- 26 cerebella were injected with india ink to study the anatomical features of PICA, AICA, and SCA.
- Irrigation areas and anastomoses were examined in 8 of these cerebella.
Main Results:
- PICA (82% from vertebral artery) supplied the occipital surface, caudal tentorial surface, and inferior vermis.
- AICA (92% from basilar artery) supplied the petrosal surface and flocculus.
- SCA supplied the tentorial surface, superior vermis, and dentate nucleus.
- PICA, AICA, and SCA were always interconnected by anastomoses (40-420 microns).
Conclusions:
- Cerebellar infarcts occurred in PICA (60%) or SCA (40%) territories.
- Anatomical data were compared with CT/MRI findings of cerebellar infarcts in 10 patients.