ArticleWorld journal of radiology2025
Magnetic resonance imaging-based classification of trigeminal nerve-superior cerebellar artery relationships.
Article in World journal of radiology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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1 citing paper in PubMed.
- Preoperative imaging evaluation of primary trigeminal neuralgia using 3D TOF-MRA and 3D FIESTA-c: A retrospective study of 412 cases.Journal of neurology · 2026Article
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6 authors.
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Abstract
backgroundThe trigeminal nerve (TN) is frequently implicated in neurovascular conflicts, most commonly with the superior cerebellar artery (SCA), its predominant arterial counterpart in the cerebellopontine angle.
aimTo examine the relationship between the SCA and TN utilizing high-resolution magnetic resonance imaging and evaluated whether particular anatomical configurations predispose to clinically significant contact.
methodsMagnetic resonance imaging scans from 80 patients (160 sides) were retrospectively analyzed, excluding cases with pathological processes affecting the TN. Using multiplanar reconstruction, the TN root was identified and its spatial relationship with the SCA was evaluated.
resultsEight distinct topographic patterns were identified. The SCA most commonly coursed superior (30.6%), lateral (18.8%), or superolateral (17.5%) to the TN. Medial configurations, although less frequent, were associated with the shortest artery-nerve distance (mean 1.85 ± 1.28 mm) and significantly higher contact rates (
conclusionAlthough SCA-TN contact is relatively frequent, only particular medial and superior configurations seem to predispose individuals to symptomatic compression. These observations are consistent with cadaveric and surgical evidence highlighting the significance of root entry zone contact in trigeminal neuralgia. Vascular contact alone should not serve as a diagnostic criterion; instead, geometric configuration and related nerve alterations must also be incorporated into preoperative assessment.
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