Checklist of the Benthic Marine Plants of the Madeira Archipelago.

Copyright © 2001 by Walter de Gruyter.A checklist of the benthic marine plants of the archipelago of Madeira is presented based on published information and personal observations. This list includes 1 Spermatophyte and 359 algal species, comprising 64 Chlorophycota, 64 Chromophycota and 231 Rhodophycota. Fifteen doubtful records for the area are also included

Pseudo-hemorragia subaracnoideia: nem tudo o que parece é

Poster apresentado no Congresso da Sociedade Portuguesa de Neuroradiologia, 5, Figueira da Foz, 29 e 30 de Maio de 200

Cluster models of Lambda-Lambda-6He and Lambda-9Be hypernuclei

Configuration space Faddeev calculations are performed for the binding energy of Lambda-Lambda-6He and Lambda-9Be bound states, here considered as alpha-Lambda-Lambda and alpha-alpha-Lambda clusters respectively, in order to study the dependence of the calculated binding energy on the alpha-Lambda potential input. For Lambda-Lambda-6He, using realistic interactions, the uncertainty in extracting the Lambda-Lambda S=L=0 interaction strength does not exceed 0.1 MeV, which is a fraction of the order of magnitude derived for other theoretical uncertainties. For Lambda-9Be, the dependence of the calculated binding energy on the alpha-Lambda potential is considerably larger, of order 1 MeV. Our results for Lambda-9Be suggest that the odd-state alpha-Lambda interaction is substantially reduced with respect to the even-state component.Comment: 16 pages, including 4 figures, typos corrected, slightly revised, accepted to Nuclear Physics

Consensus Recommendations of the Multiple Sclerosis Study Group and the Portuguese Neuroradiological Society for the Use of Magnetic Resonance Imaging in Multiple Sclerosis in Clinical Practice: Part 2

INTRODUCTION: Magnetic resonance imaging is recognized as the most important diagnostic test in the diagnosis of multiple sclerosis, differential diagnosis and evaluation of progression/therapeutic response. However, to make optimal use of magnetic resonance imaging in multiple sclerosis, the use of a standard, reproducible and comparable imaging protocol is of uttermost importance. In this context, the Portuguese Society of Neuroradiology and the Group of Studies of Multiple Sclerosis, after a joint discussion, appointed a committee of experts to create recommendations adapted to the national reality on the use of magnetic resonance imaging in multiple sclerosis. This document represents the second part of the first Portuguese consensus recommendations on the use of magnetic resonance imaging in multiple sclerosis in clinical practice. MATERIAL AND METHODS: The Portuguese Society of Neuroradiology and the Group of Studies of Multiple Sclerosis, after discussing the topic in national meetings and after a working group meeting held in Figueira da Foz, May 2017, appointed a committee of experts that have developed several standard protocols on the use of magnetic resonance imaging on multiple sclerosis by consensus. The document obtained was based on the best scientific evidence and expert opinion. Portuguese multiple sclerosis consultants and departments of neuroradiology scrutinized and reviewed the consensus paper; comments and suggestions were considered. Standardized strategies of magnetic resonance imaging referral in clinical practice for diagnosis and follow-up of multiple sclerosis were published in the first part of this paper. RESULTS: We provide magnetic resonance imaging acquisition protocols regarding multiple sclerosis diagnostic and monitoring and the information to be included in the report for application across Portuguese healthcare institutions. CONCLUSION: We hope that these first Portuguese magnetic resonance imaging guidelines will contribute to optimize multiple sclerosis management and improve patient care in Portugal.info:eu-repo/semantics/publishedVersio

Avaliação multi-modal e problemas diagnósticos da trombose venosa cerebral

Comunicação apresentada no Congresso da Sociedade Portuguesa de Neuroradiologia, 5, Figueira da Foz, 29 e 30 de Maio de 200

Alterações do desenvolvimento do manto cortical e calcificações em ressonância magnética fetal

Poster apresentado no Congresso da Sociedade Portuguesa de Neuroradiologia, 5, Figueira da Foz, 29 e 30 de Maio de 200

Neuroimaging findings in alcohol-related encephalopathies

OBJECTIVE: Our aim was to review the emergent neuroimaging findings of alcohol-related CNS nontraumatic disorders. Alcohol (ethanol) promotes inflammatory processes, increases DNA damage, and creates oxidative stress. In addition, the accompanying thiamine deficiency may lead to Wernicke encephalopathy. Associated changes in serum osmolarity may lead to acute demyelination. CONCLUSION: Alcohol-related encephalopathies can be life-threatening conditions but can be prevented or treated, if recognized

Anatomy and variants of the cerebral venous system – fact or defect?

A anatomia do sistema venoso intracraniano assenta numa estrutura tridimensional complexa e reconhecidamente variável. Para correcta identificação de todos os seus constituintes é essencial conhecer em detalhe os respectivos fundamentos anatómicos e designadas variantes. No entanto, estas alterações estruturais, classicamente denominadas por variantes anatómicas podem surgir, não só em casos assintomáticos, como também em determinadas condições patológicas. Caso em que poderão haver consequentes implicações diagnósticas e terapêuticas. Objectivo: Partindo deste pressuposto, os autores pretendem apresentar uma súmula da anatomia do sistema venoso cerebral e suas eventuais alterações estruturais frisando a sua etiologia simplesmente constitucional ou potencialmente patológica. Método e Resultados: Com base em casos práticos e seguindo uma ordem esquemática e sintética serão apresentadas as alter- ações anatómicas mais frequentes e discutida a sua etiologia constitucional ou eventualmente patológica. Conclusão: A anatomia venosa intracraniana é caracterizada pela sua ampla variedade de apresentação. Estas alterações são clas- sicamente definidas como variantes anatómicas. No entanto, estas variações podem surgir associadas a determinadas situações patológicas. Apenas um profundo conhecimento das estruturas anatómicas permite caracterizar a etiologia destas diferenças como constitucional ou patológica