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Search Results: 1 - 10 of 30758 matches for " Silveira Roberto Leal "
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Aspirador-irrigador para microcirurgia: nota técnica
Gusm?o, Sebasti?o;Silveira, Roberto Leal;
Arquivos de Neuro-Psiquiatria , 2003, DOI: 10.1590/S0004-282X2003000200029
Abstract: a modification of the conventional suction device for microsurgery is described. it consists of a built-in tube in another tube, being the first connected to the suction device and the second to the irrigation. this suction-irrigator device allows to accomplish the suction and irrigation simultaneously and in a precise way.
Varia??es da extens?o anterolateral do acesso suboccipital lateral: estudo anat?mico
Silveira, Roberto Leal;Gusm?o, Sebasti?o;
Arquivos de Neuro-Psiquiatria , 2002, DOI: 10.1590/S0004-282X2002000200013
Abstract: we studied the extensions of the lateral suboccipital approach (lsoa) in seven cadaver heads, in the microsurgical laboratory, in order to stablish the extensions necessary to approach the anterolateral area of the foramen magnum and the jugular foramen. the extensions (bone resection) were accomplished in five progressive steps: 1) suboccipital retrossigmoid craniectomy (lsoa retrocondylar); 2) extending the craniectomy with removal of half the occipital condyle (lsoa partial transcondylar); 3) extending the drilling of the occipital condyle to open the hypoglossal foramen, followed by removal of the jugular tubercle and opening the jugular foramen (lsoa transcondylar-transjugular); 4) complete drilling of the occipital condyle (lsoa complete transcondylar); 5) lsoa complete transcondylar plus removal of the atlas lateral mass up to the odontoid process (asol transcondylar-transjugular). we concluded that the extensions of lsoa should be adapted to the topography of the lesion: the lsoa retrocondylar for the lateral area of the foramen magnum; the lsoa partial transcondylar for the anterolateral portion; the lsoa transcondylar-transjugular to reach the jugular foramen; the lsoa complete transcondylar for the anterior part, and the lsoa complete transcondylar/translateral mass of the atlas for extradural lesions anterior to the foramen magnum.
Aspirador-irrigador para microcirurgia: nota técnica
Gusm?o Sebasti?o,Silveira Roberto Leal
Arquivos de Neuro-Psiquiatria , 2003,
Abstract: Descreve-se uma modifica o do aspirador convencional para microcirurgia, que consiste de um tubo o qual, em sua por o proximal é embutido em outro tubo, sendo o primeiro conectado ao aspirador e o segundo à irriga o. Este aspirador-irrigador permite realizar a aspira o e irriga o simultaneamente e de forma precisa.
Varia es da extens o anterolateral do acesso suboccipital lateral: estudo anat mico
Silveira Roberto Leal,Gusm?o Sebasti?o
Arquivos de Neuro-Psiquiatria , 2002,
Abstract: Estudamos, em laboratório de microcirurgia, as extens es do acesso suboccipital lateral (ASOL) em sete pe as anat micas, com o objetivo de definir as extens es deste acesso necessárias à abordagem das les es da regi o anterolateral do forame magno e do forame jugular. As extens es (ressec o óssea) foram realizadas em cinco estágios progressivos: 1) craniectomia suboccipital retrossigmóidea (ASOL retrocondilar); 2) amplia o da craniectomia com remo o da metade posterior do c ndilo occipital (ASOL transcondilar parcial); 3)extens o lateral da blocagem do c ndilo occipital até abrir o canal do hipoglosso, seguida de ressec o do processo jugular e abertura do forame jugular (ASOL transcondilar parcial-transjugular); 4) brocagem completa do c ndilo occipital (ASOL transcondilar completo); 5) ASOL completo acrescido de retirada da massa lateral do atlas até identifica o do processo odontóide. Concluimos que as extens es do ASOL devem ser adaptadas à topografia da les o: o ASOL retrocondilar para as les es laterais ao forame magno, o ASOL transcondilar parcial para as anterolaterais, o ASOL transcondilar-transjugular para as les es da regi o do forame jugular, o ASOL transcondilar completo para as anteriores ao forame magno, e o transcondilar completo/trans-massa lateral do atlas para as les es extradurais da regi o anterior ao forame magno.
Rela??es cranioencefálicas das veias de Trolard e de Labbé: aplica??es neurocirúrgicas
Gusm?o, Sebasti?o;Reis, Cassius;Silveira, Roberto Leal;
Arquivos de Neuro-Psiquiatria , 2001, DOI: 10.1590/S0004-282X2001000100013
Abstract: we accomplished an anatomic study of the anastomotic veins of trolard and labbé in seven human cephalic segments with the objective to accurate its stretch and references to facilitate its preservation during surgical procedure. the relationship between the trolard vein and motor cortex was also studied.
Estudo das estruturas neurovasculares da face posterior da piramide petrosa: aplica??es nas abordagens do angulo pontocerebelar
Gusm?o, Sebasti?o;Silveira, Roberto Leal;Reis, Cassius;
Arquivos de Neuro-Psiquiatria , 2003, DOI: 10.1590/S0004-282X2003000300021
Abstract: a topographic study of posterior surface of the petrous pyramid was performed in 20 human cadaveri heads. the distances between the neurovascular structures were measured in the points where they contact the posterior surface of the petrous pyramid. the study also points out the relationship between the bone landmarks and the transverse and the superior petrous sinuses. the result of this study was correlated with the approaches to the cerebellopontine angle.
Acesso supratentorial-infraoccipital ou occipitopolar: estudo clínico e anat?mico
Gusm?o, Sebasti?o;Silveira, Roberto Leal;Oliveira, Marcelo Magaldi;
Arquivos de Neuro-Psiquiatria , 2005, DOI: 10.1590/S0004-282X2005000200013
Abstract: twenty-two patients harboring tumors or vascular lesions (avms and aneurysms) located at the posterior aspect of the parahipocampal gyrus and the pulvinar of thalamus operated by supratentorial-infraoccipital approach were analysed. total resection was achieved in all five avm patients as well as in six out of fifteen tumor patients. this approach was performed in five anatomical specimens (ten approaches); it results, along with the surgical results, allow this approach to be considered a good option for lesions of the pulvinar of thalamus and postero-medial temporal lobe which are evident at the transverse fissure.
Pontos referenciais nos acessos cranianos
Gusm?o, Sebasti?o;Silveira, Roberto Leal;Arantes, Aluízio;
Arquivos de Neuro-Psiquiatria , 2003, DOI: 10.1590/S0004-282X2003000200030
Abstract: the knowledge of the craniotopography allows the delimitation of the cranial approaches. in this study the landmarks, defined in relation to the craniometric points and used in the different cranial approaches, were systematized. twenty two landmarks are described: the first twelve are in relation to the skull base and the remainder are in relation to the skull vertex.
Broca e o nascimento da moderna neurocirurgia
Arquivos de Neuro-Psiquiatria , 2000, DOI: 10.1590/S0004-282X2000000600028
Abstract: this study presents broca's pioneering efforts on cerebral localizations and craniotopography and their application on the first craniotomy based on cerebral localization.
Cisel em U para a sec??o do teto da órbita: nota técnica
Arquivos de Neuro-Psiquiatria , 1999, DOI: 10.1590/S0004-282X1999000200027
Abstract: we describe a new u-shaped chisel whose cutting edge allows for a precise and safer cutting of the orbital roof in the frontoorbital approach.
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