Pontos referenciais nos acessos cranianos

Ribas, Guilherme Carvalhal

doi:10.1590/s0004-282x2003000600033

Cited by 4 publications

(3 citation statements)

References 2 publications

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“…The longitudinal cerebral fissure ( fissura longitudinalis cerebri) , or inter‐hemispheric fissure, is the principal encephalic surface feature or landmark that divides the left and right hemispheres. Extending from the anterior to the posterior and from the superior to the inferior hemisphere regions, the LCF separate the regions incompletely for about one‐half of their vertical dimension beyond the middle region (Getty and Grossman, ; Yasargil, ; Dyce et al, ; Yasargil, ; Rhoton, ; Ribas, ; I.C.V.G.A.N., ). In the frontal bone, during the central and the pterional craniotomies, the LCF can be used as an important surgical corridor.…”

Section: Introductionmentioning

confidence: 99%

Longitudinal Cerebral Fissure Anatomy Variations in Brachy‐, Dolicho‐ and Mesaticephalic Dogs and Their Importance to Brain Surgery

Carreira

Ferreira

2015

The Anatomical Record

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The study used a sample of 69 formalin-fixed brains from adult dog cadavers (n 5 69) and aimed (1) to characterize the longitudinal cerebral fissure (LCF) anatomy in brachy-(B), dolicho-(D) and mesaticephalic-(M) dogs and their potential differences, and (2) to establish cranioencephalic relationships between the LCF and five classical craniometric points(cp): asterion(ast), bregma(b), stephanion(st), glabella(g), and pterion(pt). Anatomical records were collected using a digital caliper, and for statistical analysis P-values < 0.05 were considered significant. The LCF length can be ranked, in ascending order as B < D < M, and if used as a surgical corridor, the M group had the greatest surgical corridor area, and the D group the smallest. LCF morphology was uniform among the three groups exhibiting dilated anterior(AR) and posterior(PR) regions and narrow middle region, where the most marked differences were registered. The LCF AR is the ideal spot to begin brain surgery if the LCF is to be used as a surgical corridor in B and M, while the LCF PR should be considered in D. The five cp selected were quite useful to understand LCF anatomical morphology, its projections over the external skull surface, and to establish cranioencephalic relationships between the LCF and vault; allowing us to consider the vault anterior area in B, and in M, and the vault posterior area in D for craniotomy initial burr-hole placement. As for the distance from the cp projections in the brain surface to the LCF regions, major differences were registered by comparing the B group with the other two, and for both hemispheres.

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Section: Introductionmentioning

confidence: 99%

Longitudinal Cerebral Fissure Anatomy Variations in Brachy‐, Dolicho‐ and Mesaticephalic Dogs and Their Importance to Brain Surgery

Carreira

Ferreira

2015

The Anatomical Record

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“…At the left side, the 3 divisions of inferior frontal gyrus between the anterior ascending and anterior horizontal ramus of the lateral sulcus are found (pars orbitalis, triangularis and opercularis) and its correspondence with the insula limits must be searched for [2][3][4][6][7][8] . The relations of the superficial structures with the deep ones, as the place of foramen of Monro according to the superficial landmarks must always be looked for is called intra-parietal point and takes you to the atrium of ventricles 9,10 . The occipital lobe has an inconstant gyri and sulci but one lateral occipital sulci at least must be identified as continuity from the IPS.…”

Section: Stepmentioning

confidence: 99%

Dissection technique for the study of the cerebral sulci, gyri and ventricles

Mattos

Santos

Zullo

et al. 2008

Arq. Neuro-Psiquiatr.

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-Neuroanatomy in addition to neurophysiology, are the basic areas for the proper formation from health students to specialized professionals in neuroscience. A step by step guide for practical studies of neuroanatomy is required for this kind of knowledge to become more acceptable among medical students, neurosurgeons, neurologists, neuropediatricians and psychiatric physicians. Based on the well known courses of sulci, gyri and ventricles offered by Beneficência Portuguesa Hospital in São Paulo, Brazil, two times a year, since 1994, totalizing more than 20 complete courses, and answering the request of many neuroscience students and professionals whose asked for a practical guide to the neuroanatomy study, the authors suggest a protocol for the study of superficial and deep brain structures showing how to approach the more structures as possible with minimum damage to the anatomic piece and with the smaller number of brains.Key wordS: neuroanatomy, brain, dissection technique. técnica de dissecação para o estudo dos sulcos, giros e ventriculos cerebraisResumo -Neuroanatomia e a neurofisiologia são as áreas básicas para a adequada formação desde estudantes na área da saúde a profissionais especializados em neurociências. Um guia prático, passo a passo, para o estudo de neuroanatomia é necessário para tornar esse conhecimento mais acessível entre estudantes de medicina, neurologistas, neurofisiologistas, neurocirurgiões, neuropediatras e psiquiatras. Baseados em cursos reconhecidos nacional e internacionalmente a respeito dos sulcos, giros e ventrículos cerebrais elaborados e realizados pelo Instituto de Ciências Neurológicas (ICNe) no Hospital de Beneficência Portuguesa de São Paulo, Brasil, duas vezes ao ano, totalizando mais de 20 cursos já realizados, os autores apresentam um protocolo de dissecação para o estudo das estruturas superficiais e profundas do encéfalo, mostrando como expor o máximo de estruturas com um mínimo de manipulação e dano à peça anatômica e utilizando o menor número de encéfalos possíveis.PAlAvrAS-CHAve: neuroanatomia, cérebro, técnicas de dissecação. The study of neuroanatomy is one of the most challenging issues for the proper formation of medical students, residents of neurology, neurosurgery, neuropediatrics and for those interested in medical sciences. Therefore, according to Brazilian Ministry of education and Culture, there are terms for all medical schools that make the study of neuroanatomy an obligation for the acceptance of that institution as one registered and allowed to offer neuroscience residency programs 1 . The use of fixed brains for this purpose is wide accepted but some details of neuroanatomy are usually missed if a defined protocol of dissection is not followed. The damage to the formolized brain is another matter that can happen if there is no guidance in that study, especially with the difficult access to these organs in most places. The description of the already namely structures, sulci, gyri and ventricles elements and its relations are not the object...

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“…As hypothesized, we search to understand the anatomical morphology of the TVS, its relationship to other skull and brain structures and any potential variations associated with skull type enabling the creation of a basic referencing anatomical system. A key advantage of this study is demonstrating that using natural skull landmarks surgeon may have the opportunity to delineate and predict the TVS topographic route over the vault, which can aid planning and neuronavigation in brain surgeries, thus promoting patient safety (Cooper and Cooper, ; Gusmão et al., ; Greenberg, ; Flegel et al., ; Marinho et al., ; Ribas, ; Trantakis et al., ; Kantarci et al., ,b; Sabbatini, ; Ribas et al., ; García‐González et al., ).…”

Section: Introductionmentioning

confidence: 99%

Morphological Variations in the Transverse Venous Sinus Anatomy of Dogs and its Relationship to Skull Landmarks

Carreira

Ferreira

2015

Anat. Histol. Embryol.

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We characterized the anatomical morphology of the transverse venous sinus (TVS) of 69 canine adult cadavers belonging to three groups: brachycephalic (B), dolichocephalic (D) and mesaticephalic (M). In addition, we outlined its path over the skull using five classic human craniometric points (CPs): the asterion (ast), the bregma (b), the glabella (g), the stephanion (st) and the pterion (pt). The study aimed to establish anatomical differences in the TVS between groups and in the relationship between the TVS and skull. We found that TVS anatomy and its relationships to skull landmarks vary markedly between the groups, with similar anatomical arrangements in B and M. The TVS length can be ranked as M < B < D (with D being the biggest), whereas the width can be ranked as M < D < B (with B being the widest) with the right side being smaller than the left. In the B and M groups, the TVS assumes a craniocaudal trajectory that is closer to the lateral skull wall than in D, where the TVS presents a caudocranial direction. By documenting the morphological characteristics of the TVS, we can create a set of anatomical references allowing construction of a basic framework to greatly decrease the probability of TVS injury during neuronavigation procedures when supported by a good knowledge of the skull, brain anatomies and their relationships.

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Pontos referenciais nos acessos cranianos

Cited by 4 publications

References 2 publications

Longitudinal Cerebral Fissure Anatomy Variations in Brachy‐, Dolicho‐ and Mesaticephalic Dogs and Their Importance to Brain Surgery

Longitudinal Cerebral Fissure Anatomy Variations in Brachy‐, Dolicho‐ and Mesaticephalic Dogs and Their Importance to Brain Surgery

Dissection technique for the study of the cerebral sulci, gyri and ventricles

Morphological Variations in the Transverse Venous Sinus Anatomy of Dogs and its Relationship to Skull Landmarks

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