Optimal trajectory of the neuroendoscope for third ventricle pavement access

Background and aimEndoscopic 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 speci...

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Main Authors: Joana Sousa, Susana Maria Silva, Hélio Alves, Bruno Carvalho, José Maria Sousa, Manuel J. Ferreira-Pinto, José Paulo Andrade
Format: Article
Language:English
Published: Frontiers Media S.A. 2025-01-01
Series:Frontiers in Neuroanatomy
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Online Access:https://www.frontiersin.org/articles/10.3389/fnana.2025.1431128/full
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author Joana Sousa
Susana Maria Silva
Susana Maria Silva
Hélio Alves
Bruno Carvalho
Bruno Carvalho
José Maria Sousa
Manuel J. Ferreira-Pinto
Manuel J. Ferreira-Pinto
Manuel J. Ferreira-Pinto
Manuel J. Ferreira-Pinto
José Paulo Andrade
José Paulo Andrade
author_facet Joana Sousa
Susana Maria Silva
Susana Maria Silva
Hélio Alves
Bruno Carvalho
Bruno Carvalho
José Maria Sousa
Manuel J. Ferreira-Pinto
Manuel J. Ferreira-Pinto
Manuel J. Ferreira-Pinto
Manuel J. Ferreira-Pinto
José Paulo Andrade
José Paulo Andrade
author_sort Joana Sousa
collection DOAJ
description Background and aimEndoscopic 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.Methods187 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.ResultsSignificant 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).ConclusionThe 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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spelling doaj-art-9eb3f798656c4a988b2052054c545ac62025-01-22T07:14:35ZengFrontiers Media S.A.Frontiers in Neuroanatomy1662-51292025-01-011910.3389/fnana.2025.14311281431128Optimal trajectory of the neuroendoscope for third ventricle pavement accessJoana Sousa0Susana Maria Silva1Susana Maria Silva2Hélio Alves3Bruno Carvalho4Bruno Carvalho5José Maria Sousa6Manuel J. Ferreira-Pinto7Manuel J. Ferreira-Pinto8Manuel J. Ferreira-Pinto9Manuel J. Ferreira-Pinto10José Paulo Andrade11José Paulo Andrade12Unit of Anatomy, Faculty of Medicine, Department of Biomedicine, University of Porto, Porto, PortugalUnit of Anatomy, Faculty of Medicine, Department of Biomedicine, University of Porto, Porto, PortugalCINTESIS@RISE, Porto, PortugalUnit of Anatomy, Faculty of Medicine, Department of Biomedicine, University of Porto, Porto, PortugalFaculty of Medicine, Department of Clinical Neurosciences and Mental Health, University of Porto, Porto, PortugalDepartment of Neurosurgery, Centro Hospitalar e Universitário de São João, Porto, PortugalDepartment of Neuroradiology, Centro Hospitalar e Universitário de São João, Porto, PortugalUnit of Anatomy, Faculty of Medicine, Department of Biomedicine, University of Porto, Porto, PortugalDepartment of Neurosurgery, Centro Hospitalar e Universitário de São João, Porto, PortugalMovement Disorders and Functional Neurosurgery Unit, Centro Hospitalar e Universitário de São João, Porto, PortugalFaculty of Medicine, Department of Surgery and Physiology, University of Porto, Porto, PortugalUnit of Anatomy, Faculty of Medicine, Department of Biomedicine, University of Porto, Porto, PortugalCINTESIS@RISE, Porto, PortugalBackground and aimEndoscopic 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.Methods187 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.ResultsSignificant 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).ConclusionThe 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.https://www.frontiersin.org/articles/10.3389/fnana.2025.1431128/fullthird ventricleneuroanatomyendoscopic third ventriculostomyhydrocephalusneurosurgery
spellingShingle Joana Sousa
Susana Maria Silva
Susana Maria Silva
Hélio Alves
Bruno Carvalho
Bruno Carvalho
José Maria Sousa
Manuel J. Ferreira-Pinto
Manuel J. Ferreira-Pinto
Manuel J. Ferreira-Pinto
Manuel J. Ferreira-Pinto
José Paulo Andrade
José Paulo Andrade
Optimal trajectory of the neuroendoscope for third ventricle pavement access
Frontiers in Neuroanatomy
third ventricle
neuroanatomy
endoscopic third ventriculostomy
hydrocephalus
neurosurgery
title Optimal trajectory of the neuroendoscope for third ventricle pavement access
title_full Optimal trajectory of the neuroendoscope for third ventricle pavement access
title_fullStr Optimal trajectory of the neuroendoscope for third ventricle pavement access
title_full_unstemmed Optimal trajectory of the neuroendoscope for third ventricle pavement access
title_short Optimal trajectory of the neuroendoscope for third ventricle pavement access
title_sort optimal trajectory of the neuroendoscope for third ventricle pavement access
topic third ventricle
neuroanatomy
endoscopic third ventriculostomy
hydrocephalus
neurosurgery
url https://www.frontiersin.org/articles/10.3389/fnana.2025.1431128/full
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