ArticleFrontiers in neuroanatomy2025
Optimal trajectory of the neuroendoscope for third ventricle pavement access.
Article in Frontiers in neuroanatomy, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Background and aim: Endoscopic Third Ventriculostomy (ETV) is used to treat hydrocephalus, an abnormal cerebrospinal fluid accumulation in brain ventricles. By defining a new trajectory and entry point interval, we aim to establish a standardized approach for FreeHand ETV, a vital technique when specialized tools are unavailable, or during emergencies. Methods: 187 MRIs were analyzed, with 30 having hydrocephalus. A pathway crossing the cranial bone, interventricular foramen (of Monro) and tuber cinereum was outlined. Measurements involved distances to cranial sutures, pathway angles and depths, and distances to important anatomical landmarks. Comparisons between hydrocephalic and non-hydrocephalic patients were made while assessing variations linked to age, sex and Evan's index. Results: Significant differences were found, notably for depth (93.520 ± 7.228 mm), coronal plane angulation (10.982° ± 6.119°), distance to the sagittal suture (18.957 ± 8.608 mm), and distance to the superior frontal sulcus (7.00 mm). Other variables did not differ significantly between groups, including for the sagittal plane angulation (2.549° ± 3.576°) and the distances to the precentral sulcus (19.93 ± 7.955 mm), and to the coronal suture (10.55 mm). Conclusion: The new approach, situated close to cranial sutures and distant to the precentral and superior frontal sulcus, shows promise in enhancing surgical precision and outcomes for hydrocephalus management.
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