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An Update on the Superior Cerebellar Artery Origin Type
Ana-Maria Davidoiu1, Mihai Lazăr2, Alexandra Diana Vrapciu3
1Doctoral School, Faculty of Medicine, "Victor Babeş" University of Medicine and Pharmacy, RO-300041 Timișoara, Romania.
Medicina (Kaunas, Lithuania)
|December 23, 2023
Summary
The superior cerebellar artery (SCA) originates from the basilar artery (BA) in various ways, with common patterns including preterminal origins. Understanding these diverse anatomical variations is crucial for clinical practice.
Area of Science:
- Neuroanatomy
- Vascular Anatomy
- Cerebral Vasculature
Background:
- The microanatomy of the superior cerebellar artery (SCA) is critical for clinical applications.
- Variations in SCA origin can impact surgical approaches and understanding of neurological conditions.
Purpose of the Study:
- To systematically pattern the unilateral and bilateral origins of the superior cerebellar artery (SCA).
- To analyze the frequency and types of SCA origins from the basilar artery (BA).
Main Methods:
- Analysis of 205 computed tomography and magnetic resonance angiograms.
- Classification of SCA origins into types 0 (absent), 1 (preterminal), 2 (collateral), and 3 (cerebral type from PCA).
- Recording of fenestrations, duplications, and bilateral combinations of SCA origins.
Main Results:
- Type 1 (preterminal) SCA origin was most frequent (71.29%).
- Bilateral symmetrical origins were observed in 70.7% of cases, with Type B (1+1) being the most common combination (58.05%).
- Anatomical variations led to complex basilar artery (BA) branching patterns, including trifurcations and quadrifurcations.
Conclusions:
- The superior cerebellar artery (SCA) exhibits diverse anatomical origins and bilateral combinations not typically detailed in standard anatomical education.
- Individualized assessment of basilar artery (BA) terminal anatomy is essential due to the wide spectrum of variations.
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